研究者詳細 - 山崎　慎一

論文 - 山崎　慎一

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バイオマスを原料としたスーパーエンプラの調製招待

木村邦生, 山崎慎一, 兼高悠輔

ケミカルエンジニヤリング 59 ( 6 ) 39 - 43 2014年6月

マテリアルニュース&トピックスバイオ材料由来の「スーパーエンジニアリングプラスチック」の開発

兼高悠輔, 山崎慎一, 木村邦生

Material stage 14 ( 1 ) 47 - 51 2014年4月

バイオマスから作るスーパーエンプラ招待

兼高悠輔, 山崎慎一, 木村邦生

コンバーテック 42 ( 2 ) 48 - 52 2014年2月

多重水素結合性官能基を末端に有するポリエチレンおよびポリジオキサノンの結晶化査読

内村美香, 岡崎康平, 山崎慎一, 木村邦生

高分子論文集 71 ( 11 ) 562 - 572 2014年

アラミドの中空微粒子の新調製法招待

木村邦生, 山崎慎一, 内田哲也, 中山博文

ケミカルエンジニヤリング 59 ( 12 ) 1 - 5 2014年

Heterogeneous Polycondensation for Composition Control of Poly(p-mercaptobenzoyl-co-p-benzamide) by Shearing 査読

Toshimitsu Ichimori, Shinichi Yamazaki, Kunio Kimura

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 51 ( 20 ) 4301 - 4308 2013年10月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WILEY-BLACKWELL

Composition control of aromatic poly(thioester-amide) was examined by the reaction-induced phase separation during polymerization of S-acetyl-4-mercaptobenzoic acid (AMBA) and p-acetylaminobenzoic acid (AABA) in aromatic solvent. The poly(thioester-amide)s were obtained as precipitates and their yields became lower at the middle range of the content of AMBA in feed ((f)). The contents of p-mercaptobenzoyl (MB) moiety ((p)) in the precipitates prepared without shearing were in good agreement with the (f) values. In contrast to this, the (p) values of the precipitates prepared at (f) of 50-70 mol % under shearing were much lower than the (f) values. The reaction rate of AMBA increased with shearing, whereas that of AABA was unchanged by shearing. This shearing effect on the reaction rates accelerated to form the homo-oligomers. The solubility of MB oligomers enhanced by shearing, whereas that of p-benzamide oligomers did not enhance owing to the strong interaction through hydrogen bonding. The MB oligomers were inhibited to be precipitated, resulting in the lower (p) values than the (f) values. The composition could be controlled by the application of the shearing to the heterogeneous polymerization. (c) 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 4301-4308

DOI： 10.1002/pola.26839

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Synthesis and morphology control of self-condensable naphthalene-containing polyimide by using reaction-induced crystallization 査読

Takashi Sawai, Kanji Wakabayashi, Shinichi Yamazaki, Tetsuya Uchida, Yoshimitsu Sakaguchi, Ryouhei Yamane, Kunio Kimura

European Polymer Journal 49 ( 8 ) 2334 - 2343 2013年8月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

Poly(2,6-1H-benzo[f]isoindole-1,3(2H)-dione) (PBID), which was a self-condensable naphthalene-containing polyimide, was synthesized as precipitated crystals from 6-amino-3-(ethoxycarbonyl)-2-naphthoic acid and 7-amino-3-(ethoxycarbonyl)-2-naphthoic acid by using reaction-induced crystallization during solution polymerization. The obtained PBID crystals possessed high crystallinity, excellent thermal stability and chemical resistance. They neither exhibited Tg nor Tm under the decomposition temperature. The morphology of the PBID crystals depended on not only the polymerization conditions but also the isomeric structure of the monomer, and the wide variety of the morphology appeared such as rods, plates and lathes. The plate-like crystals had fine protuberances on the surface. Copolymerization of PBID and poly(4-phthalimide) were also examined. © 2013 Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.eurpolymj.2013.05.021

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Morphological diversity and nanofiber networks of poly(p-oxybenzoyl) generated by phase separation during copolymerization 査読

Toshimitsu Ichimori, Kenta Mizuma, Tetsuya Uchida, Shinichi Yamazaki, Kunio Kimura

Journal of Applied Polymer Science 128 ( 2 ) 1282 - 1290 2013年4月

記述言語：英語掲載種別：研究論文（学術雑誌）

Poly(p-oxybenzoyl) (POB) precipitates prepared by reaction-induced phase separation during copolymerization exhibit wide variety of morphologies such as fibril, needle, slab, spindle, and sphere. The morphology is significantly influenced by the copolymerization conditions of structure of trifunctional comonomers, copolymerization ratio, solvent, concentration, and temperature of the polymerization. Among them, POB nanofiber networks like a texture of nonwoven fabrics are obtained only by the polymerization of 4-acetoxybenzoic acid with 3,5-diacetoxybenzoic acid (DABA) in aromatic solvent at a concentration of 1.0-2.0% at the content of DABA in feed of 10-20 mol % at 320°C. The network is comprised of fibrillar crystals connected each other at spherical nodal points. The diameters of the fibers are 90-129 nm. This network is highly crystalline and the molecules are aligned along the long direction of the fibers. Various parameters characterized the networks can be controlled by the polymerization concentration. © 2012 Wiley Periodicals, Inc.

DOI： 10.1002/app.38554

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Hollow Spheres of Aromatic Polyamide Prepared by Reaction-Induced Phase Separation 査読

Yuji Fujitsu, Hirofumi Nakayama, Tetsuya Uchida, Shinichi Yamazaki, Kunio Kimura

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 51 ( 4 ) 780 - 785 2013年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WILEY-BLACKWELL

Hollow spheres of aromatic polyamide are obtained by the reaction-induced phase separation during polymerization of 5-hydroxyisophthalic acid and 1,4-phenylene diamine in an aromatic solvent at a concentration of 1-2% at 320 degrees C without stirring. The hollow sphere has a dimple hole and the diameters of the hollow spheres are 3-4 mu m. The droplets are initially generated via liquid-liquid phase separation and then rigid crosslinked network structure formed the rigid skin layer on the surface of the droplets. The solidification of the droplets occurred owing to the further polymerization in them with maintaining the morphology to form the hollow spheres. The hollow spheres exhibit outstanding thermal stability. (C) 2012 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 780-785

DOI： 10.1002/pola.26467

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Preparation of Novel Naphthalene Polyimide and Its Morphology 査読

Takashi Sawai, Tetsuya Uchida, Shinichi Yamazaki, Kunio Kimura

JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY 26 ( 3 ) 341 - 344 2013年

Morphosynthesis of poly(ether ketone) by reaction-induced crystallization during polymerization 査読

Kanji Wakabayashi, Naofumi Sumi, Shinichi Yamazaki, Tetsuya Uchida, Kunio Kimura

EUROPEAN POLYMER JOURNAL 48 ( 10 ) 1787 - 1795 2012年10月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：PERGAMON-ELSEVIER SCIENCE LTD

Morphology control of poly(ether ketone) (PEK) was examined by using the crystallization during the nucleophilic aromatic substitution reaction of potassium salt of 4-fluoro-4'-hydroxybenzophenone. Polymerizations were carried out at 290 degrees C. The PEK was obtained as precipitates and its morphology was highly influenced by the polymerization condition such as the solvent, the concentration and the polymerization time. High crystalline spindle-like crystals were obtained by the polymerization in diphenyl sulfone (DPS) at a concentration of 5.0% for 2 h with the yield of 86%. The average length and width were 1.4 mu m and 300 nm respectively, and the maximum thickness was 130 nm. The surface was not smooth and it was hilly. The spindle-like crystal was likely consisted of multilayered lamellae comprised of the microcrystallites. The molecules were oriented perpendicular to the lamella. The polymerization in DPS at a higher concentration of 10.0% afforded the networks of nanofibres, of which the diameter was 100-250 nm. The obtained PEK precipitates possessed excellent thermal properties. (C) 2012 Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.eurpolymj.2012.07.004

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Morphosynthesis of poly[4-(1,4-phenylene)oxyphthalimide] and copolymers prepared by reaction-induced crystallization during polymerization 査読

Takashi Sawai, Kanji Wakabayashi, Shinichi Yamazaki, Tetsuya Uchida, Kunio Kimura

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 50 ( 18 ) 1293 - 1303 2012年9月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WILEY-BLACKWELL

Morphosynthesis of poly[4-(1,4-phenylene)oxyphthalimide] (POPI) and poly[4-(1,4-phenylene)oxyphthalimide-co-4-phthalimide] (POPI-PPI) was examined by using the crystallization during the polymerization. The POPI fibrillar crystals were obtained as precipitates with the formation of spherical aggregates of plate-like crystals. Some of the POPI fibrillar crystals were longer than 15 mu m. They possessed high crystallinity and the molecules aligned perpendicular to the long direction of the fibers. On the other hand, one-dimensional structures of POPI-PPI such as ribbon, cone, rod, and fiber were obtained as precipitates by the copolymerization. The copolymer molecules might align along the long direction of the cone-like crystals. The morphology of these poly(ether-imide)s could be controlled by not only the polymerization condition but also with the aid of copolymerization. (c) 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2012

DOI： 10.1002/polb.23122

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Selective Synthesis of Poly(p-oxybenzoyl) by Fractional Polycondensation: Enhancement of Selectivity by Shearing 査読

Toshimitsu Ichimori, Shinichi Yamazaki, Kunio Kimura

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 49 ( 21 ) 4613 - 4617 2011年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WILEY-BLACKWELL

The influence of shear flow, especially the timing for the application of shearing, was examined to enhance the selectivity for the preparation of poly(p-oxybenzoyl) (Pp-OB) by using hydrodynamically induced phase separation during polymerization of 4-(4-acetoxybenzoyloxy) benzoic acid (p-ABAD) and m-acetoxybenzoic acid (m-ABA). The polymers containing few m-oxybenzoyl (m-OB) moieties were obtained as precipitates even at high content of m-OB moiety in feed (chi(f)) under shear flow. The content of m-OB moiety in the precipitates (chi(p)) prepared under shearing throughout the polymerization at the shear rate (gamma) of 489 s(-1) was 6.3 mol % even at chi(f) of 60 mol %. Especially, the Pp-OB was obtained as the precipitates at chi(f) of less than 50 mol %. The timing of the application of the shearing influenced the selectivity significantly, and the shearing just after the precipitation of the oligomers started was quite efficient to enhance the selectivity more. The chi(p) of the precipitates prepared with shearing at gamma of 489 s(-1) just after the precipitation was only 3.9 mol % even at chi(f) of 60 mol %. The shear flow reduced the difference in the reactivity between p-ABAD and m-ABA, resulting in the decrease in the selectivity with regard to the formation of p-oxybenzoyl homo-oligomer. However, the shear flow enhanced the difference in the miscibility between homo-oligomers and co-oligomers. This change in the miscibility by shear flow brought about the more rapid precipitation of homo-oligomers, leading to the enhancement of the selectivity. (C) 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 4613-4617, 2011

DOI： 10.1002/pola.24904

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環状ポリエチレンの球晶成長速度から探る高分子の結晶成長に及ぼすトポロジカルな拘束と結び目絡み合いの効果査読

北原綱樹, 山崎慎一, 木村邦生

高分子論文集 68 ( 10 ) 694 - 701 2011年10月

Morphology Control of Various Aromatic Polyimidazoles-Preparation of Nanofibers 査読

Jin Gong, Tetsuya Uchida, Shinichi Yamazaki, Kunio Kimura

JOURNAL OF APPLIED POLYMER SCIENCE 121 ( 5 ) 2851 - 2860 2011年9月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WILEY-BLACKWELL

Morphology of four kinds of aromatic polyimidazoles was examined by using reaction-induced crystallization during solution polymerization at a concentration of 1% at 350 degrees C in liquid paraffin (LPF), dibenzyltoluene (DBT), and the mixture of these solvents. Aggregates of ribbon-like crystals of poly[2,6-(2,6-naphthalene)-benzobisimidazole] were obtained in LPF, and those of plate-like crystals were obtained in DBT/LPF-50 and in DBT. In contrast to this, the network structures of poly[2,2'-(2,6-naphthalene)-5,5'-bibenzimidazole)] (PNT-BBI) nanofibers with the diameter of 25 to 90 nm was mainly obtained in DBT. The network structures of the PNT-BBI nanofibers could be recognized as nonwoven fabrics of the high-performance polymers. Imidazole trimers were precipitated to form the ribbon-like crystals and then they were continuously supplied from solution to grow the crystals. Molecular weight increased by the polymerization on the surface of the crystals when they crystallized and in the crystals. The initially formed aggregates of ribbon-like crystals changed to the nanofibers with time. In the case of poly[2,6-(4,4'-biphenylene)-benzobisimidazole] and poly[2,2'-(4,4'-biphenylene)-5,5'-bibenzimidazole)], they exhibited various morphologies such as spheres, lath-like crystals, and the spherical aggregates of lath-like crystals depending on the solvent, but fibers like PNT-BBI were not formed. The crystals obtained in this study possessed very high crystallinity and the outstanding thermal stability measured by TGA. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 121: 2851-2860, 2011

DOI： 10.1002/app.33914

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Preparation of Poly(p-oxybenzoyl) Crystals Using Direct Polymerization of p-Hydroxybenzoic Acid in the Presence of Boronic Anhydrides 査読

Masahiro Kihara, Shin-Ichiro Kohama, Shota Umezono, Kanji Wakabayashi, Shinichi Yamazaki, Kunio Kimura

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 49 ( 5 ) 1088 - 1096 2011年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WILEY-BLACKWELL

Poly(p-oxybenzoyl) (POB) crystals were prepared by reaction-induced crystallization during direct polymerization of p-hydroxybenzoic acid in the presence of boronic anhydrides. Polymerizations were carried out at 300 degrees C in dibenzyltoluene at a concentration of 1% with three kinds of anhydrides of boronic acid such as 3,4,5-trifluorophenylboronic acid (TFB), 4-methoxyphenylboronic acid (MPB) and 4-biphenylboronic acid (BPB). The POB crystals were formed as precipitates in the solution and the morphology was considerably influenced by both the structure of the boronic anhydride and its concentration (C(B)). Needle-like crystals were firmed in the presence of TFB anhydride (TFBA) at C(B)S of 5 and 10 mol % by the spiral growth of lamellae. Spherical aggregates of slab-like crystals were formed at C(B)S from 50 to 100 mol %. The polymerization with MPB anhydride and BPB anhydride (BPBA) also yielded the needle-like crystals at C(B)S of 50 and 5 mol %, respectively. The polymerization with TFBA at lower C(B) was favorable to prepare the needle-like crystal. Molecular weight was also influenced by the structure of the boronic anhydride and C(B). M(n) increased generally with C(B) and BPBA gave the highest M(n) of 14.7 x 10(3) at C(B) of 100 mol %. The loose packing of the molecules in the crystal caused by the bulkiness of the end-groups made the polymerization in the crystals more efficiently. Morphology and molecular weight of the POB crystals could be controlled by the chemical structure and the content of boronic anhydride. (C) 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 1088-1096, 2011

DOI： 10.1002/pola.24521

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Micro-flowers of poly(p-phenylene pyromelliteimide) crystals 査読

Kanji Wakabayashi, Tetsuya Uchida, Shinichi Yamazaki, Kunio Kimura

POLYMER 52 ( 3 ) 837 - 843 2011年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCI LTD

Morphology control of poly(p-phenylene pyromelliteimide) (PPPI) crystals was examined using reaction-induced crystallization of oligomers during solution polymerization of self-polymerizable N-(4'-aminophenyl)-3-carboxyl-4-alkoxycarbonylPhthalimide. Micro-flowers of the PPP1 needle-like crystals were formed in which the needle-like crystals grew radially from the center part as petals. The molecules aligned regularly along the long axis of the needle-like crystal. The structure of alkoxy group in the monomer and the monomer concentration influenced the size of the needle-like crystals, and their average length and width were changeable from 640 nm to 1.69 mu m and from 110 nm to 210 nm, respectively. The average thickness was 20 nm. The obtained micro-flowers possessed high crystallinity and exhibited excellent thermal stability. (C) 2010 Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.polymer.2010.12.022

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Preparation of Poly(p-phenylenepyromelliteimide) Microspheres with Rugged Surfaces Using Crystallization During Isothermal Polymerization 査読

Kanji Wakabayashi, Tetsuya Uchida, Shinichi Yamazaki, Kunio Kimura

MACROMOLECULAR CHEMISTRY AND PHYSICS 212 ( 2 ) 159 - 167 2011年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WILEY-V C H VERLAG GMBH

Preparation of discrete PPPI microspheres was examined using the crystallization of oligomers during isothermal polymerization of PMDA and p-phenylene diisocyanate, and that of pyromellitic dithioanhydride and PPDA in poor solvents. In contrast to PPPI microspheres with smooth surfaces that were previously prepared by phase-separation during the polymerization of PPDA and PMDA, the microspheres obtained here consisted of flake-like lamellae with rugged surfaces. The diameters of the microspheres ranged from 0.5 to 6.7 mu m. They exhibited excellent thermal stability depending on the monomers. These results provide a new preparative procedure of the PPPI microsphere with a rugged surface.

DOI： 10.1002/macp.201000510

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One-Pot Preparation of Aromatic Poly(azomethine ester) Fibrillar Crystals Using Reaction-Induced Crystallization 査読

Jin Gong, Yasuhide Yakushi, Tetsuya Uchida, Shinichi Yamazaki, Kunio Kimura

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 49 ( 1 ) 127 - 137 2011年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WILEY-BLACKWELL PUBLISHING, INC

Polymerizations of 4-(4-acetoxybenzylideneamino)-benzoic acid were performed in dibenzyltoluene (DBT) and a mixture of DBT and liquid paraffin at 350 degrees C for 6 h. Fibrillar crystals of poly[4-(4-oxybenzylideneamino)benzoyl] (POAB) having the width of 50-450 nm and the length of over 15 pm were obtained by the crystallization during the polymerization. The fibrillar crystals possessed high crystallinity and the molecular chains aligned perpendicular to the long axis of the fibrillar crystals. Plate-like crystals were initially formed by the crystallization of oligomers, and then they changed to the fibrillar crystals via the formation of bundle-like crystals after 1 h. Molecular weight increased by the further polymerization in the crystals. Based on these results, one-pot preparation of the fibrillar POAB crystals was examined by the polymerization of 4-acetoxybenzaldehyde and 4-aminobenzoic acid. The polymerization at 180 degrees C for 2 h and then at 350 degrees C for 6 h afforded the fibrillar crystals with a small amount of the ribbon-like crystals. Although the side-reaction to generate the p-benzamide sequences was not completely depressed, the sequence of heating in which 180 degrees C for the formation of the azomethine linkage and then 350 degrees C for the formation of the ester linkage was preferable to prepare the fibrillar POAB crystals. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 127-137, 2011

DOI： 10.1002/pola.24427

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Preparation of poly(2-oxy-6-naphthoyl) and copolymers using reaction-induced phase separation during direct polymerization in the presence of boronic anhydride 査読

Masahiro Kihara, Shinichi Yamazaki, Kunio Kimura

POLYMER CHEMISTRY 2 ( 5 ) 1195 - 1202 2011年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ROYAL SOC CHEMISTRY

Poly(2-oxy-6-naphthoyl) (PON) was obtained as precipitates by direct polymerization of 2-hydroxy-6-naphthoic acid (HNA) in the presence of boronic anhydrides such as 2,4,6-tris(3,4,5-trifluorophenyl)-1,3,5,2,4,6-trioxatriborinane (TFBA) and 2,4,6-tri(biphenyl-4-yl)-1,3,5,2,4,6-trioxatriborinane (BPBA). The polymerizations were carried out in an aromatic solvent at 300 degrees C for 24 h. Both morphology and molecular weight of the PON precipitates were considerably influenced by not only the structure of the boronic anhydride but also its concentration (c(B)). Spheres with needles on their surface were formed in the polymerization with TFBA at c(B) of 50-70 mol%, and those having smooth surface were obtained at c(B) of 100 mol%. The M(n) increased with the value of c(B) in the range from 2.7 x 10(3) to 9.0 x 10(3). Aggregates of cone-like crystals were prepared in the polymerization with BPBA at c(B) of 10-30 mol%, and spheres having rugged surface were formed at c(B) of 50-100 mol%. The M(n) also increased with the value of c(B) in the range from 5.4 x 10(3) to 12.9 x 10(3). These PON precipitates possessed high crystallinity in spite of the morphology. The copolymerization of HNA and 4-hydroxybenzoic acid (HBA) was also examined in the presence of BPBA at c(B) of 100 mol% with varying the content of HBA in feed (r(f)). Copolymers were obtained as spheres of which the content of 4-oxybenzoyl moiety was lower than the value of r(f) due to the difference in the solubility of the oligomers.

DOI： 10.1039/c0py00420k

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