Hetero-Stereocomplex Crystallization between Star-Shaped 4-Arm Poly(L-2-hydroxybutanoic acid) and Poly(D-lactic acid) from the Melt

被引：16
|
作者：
Tsuji, Hideto [1 ]
Suzuki, Miho [1 ]
机构：
[1] Toyohashi Univ Technol, Dept Environm & Life Sci, Grad Sch Engn, Toyohashi, Aichi 4418580, Japan
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2014年 / 215卷 / 19期
基金：
日本学术振兴会;
关键词：
branched polymers; hetero-stereocomplexation; polylactide; poly(2-hydroxybutyrate); stereospecific polymers; OPTICALLY-ACTIVE POLYESTERS; BIO-BASED POLYMERS; PHYSICAL-PROPERTIES; POLY(D-2-HYDROXYBUTANOIC ACID); MOLECULAR-WEIGHT; TARTARIC ACID; LACTIC-ACID; BEHAVIOR; POLY(LACTIDE)S; BLENDS;
D O I：
10.1002/macp.201400282
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Four-arm poly(l-2-hydroxybutanoic acid) [P(L-2HB)]/poly(d-lactic acid) (PDLA) blends are phase-separated to form P(L-2HB)-rich and PDLA-rich domains. Hetero-stereocomplex (HTSC) crystallization should occur at the interface of two types of domains. The crystallization temperature ranges, wherein HTSC crystallites, P(L-2HB), and PDLA homocrystallites are crystallizable in the star-shaped 4-arm P(L-2HB)/PDLA blends, are much narrower than those reported for linear 1-arm P(L-2HB)/PDLA blends, indicating that the star-shaped architecture disturbs the isothermal crystallization of the blends. Exclusive HTSC crystallization is not observed for the star-shaped 4-arm blends during isothermal crystallization in marked contrast with the result reported for the linear 1-arm blends.
引用
收藏
页码：1879 / 1888
页数：10
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