Enhanced Crystallization from the Glassy State of Poly(L-lactic acid) Confined in Anodic Alumina Oxide Nanopores

被引：53

作者：

Guan, Yu ^{[1
]}

Liu, Guoming ^{[1
]}

Ding, Guqiao ^{[2
]}

Yang, Tieying ^{[3
]}

Mueller, Alejandro J. ^{[4
,5
,6
]}

Wang, Dujin ^{[1
]}

机构：

[1] Chinese Acad Sci, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, State Key Lab Funct Mat Informat, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

[4] Univ Basque Country UPV EHU, POLYMAT, Donostia San Sebastian 20018, Spain

[5] Univ Basque Country UPV EHU, Fac Chem, Polymer Sci & Technol Dept, Donostia San Sebastian 20018, Spain

[6] IKERBASQUE Basque Fdn Sci, Bilbao, Spain

来源：

MACROMOLECULES | 2015年 / 48卷 / 08期

基金：

中国国家自然科学基金;

关键词：

COLD CRYSTALLIZATION; POLY(ETHYLENE OXIDE); POLYMER CRYSTALLIZATION; CRYSTAL ORIENTATION; MELTING BEHAVIOR; NUCLEATION; KINETICS; MORPHOLOGY; POLYETHYLENE; FABRICATION;

D O I：

10.1021/acs.macromol.5b00108

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The crystallization behavior of poly(L-lactic acid) (PLLA) it in anodic alumina oxide templates (AAO),was investigated by differential scanning calorimetry (DSC), and wide-angle-X-ray diffraction (WAXD). During heating from the glassy state, the crystallization, of infiltrated PLLA was unexpectedly enhanced as compared with bulk PLLA. The cold crystallization temperature of infiltrated PLLA from the glassy state was much lower than that of bulk PLLA. The half-crystallization time (t(1/2)) of infiltrated PLLA at 75 degrees C decreased with the diameter of AAO nanopores. The glass transition temperature of PLLA was not influenced by the geometrical Confinement, The enhanced crystallization from the glassy state was explained by surface-induced nucleation of AAO walls on PLLA. Our results provide the first observation of enhanced cold crystallization of polymers in confined geometry,

引用

页码：2526 / 2533

页数：8

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