Crystallization Behavior of Long-Chain Branching Polylactide

被引：29
作者：
Liu, Jianye [1 ]
Zhang, Shijun [1 ]
Zhang, Liying [1 ]
Bai, Yiqing [1 ]
机构：
[1] SINOPEC Beijing Res Inst Chem Ind, Beijing 100013, Peoples R China
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2012年 / 51卷 / 42期
关键词：
POLY(LACTIC ACID); POLY(L-LACTIC ACID); SPHERULITE GROWTH; POLYPROPYLENE; KINETICS; MELT; ARCHITECTURE; NUCLEATION; POLYMERS; RHEOLOGY;
D O I：
10.1021/ie301567n
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The crystallization behavior of long-chain branched (LCB) poly(L-lactide) (PLLA), which were successfully prepared by successive functional group reactions, was studied by nonisothermal and isothermal methods in a wide temperature range. The density of the nuclei for LCB samples during crystallization was much higher than that for linear PLLA. According to qualitative information about the chain topologies of the branched PLLAs, obtained by a combination of linear viscoelasticity and branch-on-branch (BOB) dynamic modeling, it should be the backbones of LCB that are able to act as nuclei and thus markedly enhance the crystallization rate of PLLA. Moreover, a kinetic analysis of crystallization was performed using secondary nucleation theory.
引用
收藏
页码：13670 / 13679
页数：10
相关论文
共 33 条
[1]   Morphological and kinetic analyses of regime transition for poly[(S)-lactide] crystal growth [J].
Abe, H ;
Kikkawa, Y ;
Inoue, Y ;
Doi, Y .
BIOMACROMOLECULES, 2001, 2 (03) :1007-1014
[2]   Nano-biocomposites: Biodegradable polyester/nanoclay systems [J].
Bordes, Perrine ;
Pollet, Eric ;
Averous, Luc .
PROGRESS IN POLYMER SCIENCE, 2009, 34 (02) :125-155
[3]   Biodegradable polymers [J].
Chandra, R ;
Rustgi, R .
PROGRESS IN POLYMER SCIENCE, 1998, 23 (07) :1273-1335
[4]   Effects of molecular architecture on two-step, melt-spun poly(lactic acid) fibers [J].
Cicero, JA ;
Dorgan, JR ;
Garrett, J ;
Runt, J ;
Lin, JS .
JOURNAL OF APPLIED POLYMER SCIENCE, 2002, 86 (11) :2839-2846
[5]  
Das C, 2006, J RHEOL, V50, P207, DOI 10.1122/1.2167487
[6]   Crystallization behavior of poly(L-lactic acid) [J].
Di Lorenzo, ML .
EUROPEAN POLYMER JOURNAL, 2005, 41 (03) :569-575
[7]   Determination of spherulite growth rates of poly(L-lactic acid) using combined isothermal and non-isothermal procedures [J].
Di Lorenzo, ML .
POLYMER, 2001, 42 (23) :9441-9446
[8]   Melt rheology of poly(lactic acid): Entanglement and chain architecture effects [J].
Dorgan, JR ;
Williams, JS ;
Lewis, DN .
JOURNAL OF RHEOLOGY, 1999, 43 (05) :1141-1155
[9]   The effect of long chain branching on the processability of polypropylene in thermoforming [J].
Gotsis, AD ;
Zeevenhoven, BLF ;
Hogt, AH .
POLYMER ENGINEERING AND SCIENCE, 2004, 44 (05) :973-982
[10]   Preparation and crystallization kinetics of new structurally well-defined star-shaped biodegradable poly(L-lactide)s initiated with diverse natural sugar alcohols [J].
Hao, QH ;
Li, FX ;
Li, QB ;
Li, Y ;
Jia, L ;
Yang, J ;
Fang, Q ;
Cao, AM .
BIOMACROMOLECULES, 2005, 6 (04) :2236-2247
1234