Separate Crystallization and Cocrystallization of Poly(L-lactide) in the Presence of L-Lactide-Based Copolymers With Low Crystallizability, Poly(L-lactide-co-glycolide) and Poly(L-lactide-co-D-lactide)

被引：22

作者：

Tsuji, Hideto ^{[1
]}

Tashiro, Kohji ^{[2
]}

Bouapao, Leevameng ^{[1
]}

Hanesaka, Makoto ^{[2
]}

机构：

[1] Toyohashi Univ Technol, Grad Sch Engn, Dept Environm & Life Sci, Toyohashi, Aichi 4418580, Japan

[2] Toyota Technol Inst, Grad Sch Engn, Dept Future Ind Oriented Basic Sci & Mat, Tempaku Ku, Nagoya, Aichi 4688577, Japan

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2012年 / 213卷 / 20期

关键词：

blends; crystallization; morphology; polyesters; poly(lactic acid); ENANTIOMERIC POLY(LACTIC ACID)S; ATOMIC-FORCE MICROSCOPY; SPHERULITE GROWTH; MOLECULAR-WEIGHT; STRUCTURAL-CHANGES; MELTING BEHAVIOR; STEREOCOMPLEX FORMATION; CRYSTAL MODIFICATIONS; BANDED SPHERULITES; X-RAY;

D O I：

10.1002/macp.201200208

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(L-lactide) (PLLA) and poly(L-lactide-co-glycolide) (78/22)0 [P(LLA-GA)] were phase-separated in PLLA/P(LLA-GA) blends, forming independent domains and thence crystallizing separately. The crystallization of PLLA was not disturbed or delayed by the presence of P(LLA-GA) and vice versa. PLLA and poly(L-lactide-co-D-lactide) (77/23) [P(LLA-DLA)] were miscible in the PLLA/P(LLA-DLA) blends, overall crystallization was delayed, and the growth of crystallites was disturbed in the presence of P(LLA-DLA). In isothermal crystallization, the originally noncrystallizable P(LLA-DLA) became crystallizable in the presence of PLLA, with which it cocrystallized. The disturbance effect on periodical lamella twisting of PLLA was larger for P(LLA-GA) than for P(LLA-DLA).

引用

页码：2099 / 2112

页数：14

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[1] Morphological and kinetic analyses of regime transition for poly[(S)-lactide] crystal growth [J].