Transcrystallization in nanofiber bundle/isotactic polypropylene composites: effect of matrix molecular weight

被引：17

作者：

Liang, Yanyan ^{[1
]}

Liu, Shuangyang ^{[1
]}

Dai, Kun ^{[1
]}

Wang, Bo ^{[1
]}

Shao, Chunguang ^{[1
]}

Zhang, Qinxing ^{[1
]}

Wang, Songjie ^{[1
]}

Zheng, Guoqiang ^{[1
,2
]}

Liu, Chuntai ^{[1
]}

Chen, Jingbo ^{[1
]}

Shen, Changyu ^{[1
]}

Li, Qian ^{[1
]}

Peng, Xiangfang ^{[2
]}

机构：

[1] Zhengzhou Univ, Key Lab Adv Mat Proc & Mold, Coll Mat Sci & Engn, Minist Educ, Zhengzhou, Peoples R China

[2] Minist Educ, Key Lab Polymer Proc Engn, Guangzhou, Guangdong, Peoples R China

来源：

COLLOID AND POLYMER SCIENCE | 2012年 / 290卷 / 12期

基金：

美国国家科学基金会;

关键词：

Electrospinning; Isotactic polypropylene; Polyamide 66 nanofiber bundle; Transcrystallinity; FIBER-REINFORCED POLYPROPYLENE; WALLED CARBON NANOTUBES; ISOTACTIC POLYPROPYLENE; ARAMID FIBERS; GROWTH-RATE; CRYSTALLIZATION; TRANSITIONS; INTERPHASE; DEPENDENCE; FRACTIONS;

D O I：

10.1007/s00396-012-2626-x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Polyamide 66 (PA 66) nanofiber bundles were first electrospun and then introduced into isotactic polypropylene (iPP) melts to prepare nanofiber bundle/iPP composites. To reveal the influences of matrix molecular weight (M (n) ) on the transcrystalline layer, three kinds of iPP with different M (n) were adopted. Polarized optical microscope was employed to investigate the transcrystallinity. In the presence of PA 66 nanofiber bundle, the heterogeneous nucleation distinctly happened in iPP melts. Moreover, the higher the iPP M (n) , the denser the nuclei. Both a decrease in matrix M (n) and an increase in isothermal crystallization temperature led to an increase in the induction time. The maximum temperature at which the transcrystalline layer can be optically observed increased with the increase of M (n) . The growth rate of transcrystallinity decreased with the increasing M (n) and crystallization temperature. Moreover, selective melting of the transcrystalline layers confirmed that it was merely composed of alpha form crystal for all composites.

引用

页码：1157 / 1164

页数：8

共 37 条

[1] Lamellar orientation in transcrystalline γ isotactic polypropylene nucleated on aramid fibers [J].

Assouline, E ;

Wachtel, E ;

Grigull, S ;

Lustiger, A ;

Wagner, HD ;

Marom, G .

MACROMOLECULES, 2002, 35 (02) :403-409

[2]

Assouline E, 1999, J POLYM SCI POL PHYS, V37, P2534, DOI 10.1002/(SICI)1099-0488(19990901)37:17<2534::AID-POLB24>3.0.CO

[3]

2-P

[4] The kinetics of α and β transcrystallization in fibre-reinforced polypropylene [J].

Assouline, E ;

Pohl, S ;

Fulchiron, R ;

Gérard, JF ;

Lustiger, A ;

Wagner, HD ;

Marom, G .

POLYMER, 2000, 41 (21) :7843-7854

[5] Influence of Annealing on Microstructure and Mechanical Properties of Isotactic Polypropylene with β-Phase Nucleating Agent [J].

Bai, Hongwei ;

Wang, Yong ;

Zhang, Zhijie ;

Han, Liang ;

Li, Yanli ;

Liu, Li ;

Zhou, Zuowan ;

Men, Yongfeng .

MACROMOLECULES, 2009, 42 (17) :6647-6655

[6] REGIME TRANSITIONS IN FRACTIONS OF ISOTACTIC POLYPROPYLENE [J].

CHENG, SZD ;

JANIMAK, JJ ;

ZHANG, A ;

CHENG, HN .

MACROMOLECULES, 1990, 23 (01) :298-303

[7] REGIME-III CRYSTALLIZATION IN POLYPROPYLENE [J].

CLARK, EJ ;

HOFFMAN, JD .

MACROMOLECULES, 1984, 17 (04) :878-885

[8] Nucleation of polypropylene crystallization by single-walled carbon nanotubes [J].

Grady, BP ;

Pompeo, F ;

Shambaugh, RL ;

Resasco, DE .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (23) :5852-5858

[9] Transcrystallization of polypropylene at cellulose nanocrystal surfaces [J].

Gray, Derek G. .

CELLULOSE, 2008, 15 (02) :297-301

[10] HDPE solution crystallization induced by electrospun PA66 nanofiber [J].

Han, Wenjuan ;

Zheng, Guoqiang ;

Liang, Yanyan ;

Dai, Kun ;

Liu, Chuntai ;

Chen, Jingbo ;

Shen, Changyu ;

Peng, Xiangfang ;

Fu, Peng ;

Cao, Wei ;

Li, Qian .

COLLOID AND POLYMER SCIENCE, 2011, 289 (07) :843-848

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