Non-isothermal crystallization kinetics of montmorillonite filled β-isotactic polypropylene nanocomposites

被引：17

作者：

Dai, Xin ^{[1
]}

Zhang, Zishou ^{[1
]}

Chen, Chunyan ^{[1
]}

Li, Mei ^{[1
]}

Tan, Yunhong ^{[1
]}

Mai, Kancheng ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Guangdong Prov Key Lab High Performance Polymer B, Key Lab Polymer Composites & Funct Mat, Minist Educ,Mat Sci Inst,Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2015年 / 121卷 / 02期

关键词：

Polypropylene; Montmorillonite; beta-Nucleation; Non-isothermal crystallization kinetics; GLASS-FORMING MELTS; POLYMER NANOCOMPOSITES; CATALYZED NUCLEATION; PHASE-CHANGE; BEHAVIOR; FRACTURE;

D O I：

10.1007/s10973-015-4635-8

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Montmorillonite filled isotactic polypropylene nanocomposites (iPP/MMT) generally form alpha-modification due to the heterogeneous alpha-nucleation of MMT for iPP crystallization. To obtain MMT filled beta-iPP nanocomposites, MMT with beta-nucleating surface (beta-MMT) was prepared by supporting calcium pimelate (CaPA) as beta-nucleator on the surface of MMT particles. The crystallization behavior, melting characteristics, and non-isothermal crystallization kinetics and crystallization activation energies of MMT and beta-MMT filled iPP nanocomposites were studied by differential scanning calorimetry. It is found that the crystallization peak temperatures of beta-MMT filled iPP nanocomposites were higher than those of beta-iPP and MMT filled iPP nanocomposites, which indicated that the heterogeneous nucleation of beta-MMT is stronger than that of MMT. Jeziorny and Mo methods were applicable to study the non-isothermal crystallization kinetics of iPP and its nanocomposites. Addition of CaPA, MMT and beta-MMT can increase the crystallization rate. The crystallization activation energies were calculated by Friedman methods, and nucleating activities were calculated by Dobreva methods. It is indicated that beta-nucleation decreased the crystallization activation energy of iPP, and the nucleating activity of beta-MMT is higher than that of CaPA and MMT.

引用

页码：829 / 838

页数：10

共 38 条

[1] Kinetics study of cold-crystallization of poly(ethylene terephthalate) nanocomposites with multi-walled carbon nanotubes [J].

Antoniadis, G. ;

Paraskevopoulos, K. M. ;

Bikiaris, D. ;

Chrissafis, K. .

THERMOCHIMICA ACTA, 2009, 493 (1-2) :68-75

[2] Non-isothermal crystallization kinetics and activity of filler in polypropylene/Mg-Al layered double hydroxide nanocomposites [J].

Ardanuy, M. ;

Velasco, J. I. ;

Realinho, V. ;

Arencon, D. ;

Martinez, A. B. .

THERMOCHIMICA ACTA, 2008, 479 (1-2) :45-52

[3] Granulation, Phase Change, and Microstructure - Kinetics of Phase Change. III [J].

Avrami, M .

JOURNAL OF CHEMICAL PHYSICS, 1941, 9 (02) :177-184

[4] Kinetics of phase change I - General theory [J].

Avrami, M .

JOURNAL OF CHEMICAL PHYSICS, 1939, 7 (12) :1103-1112

[5]

Avrami M., 1940, J CHEM PHYS, V8, P212, DOI [10.1063/1.1750631, DOI 10.1063/1.1750631]

[6] The preparation of nano-clay/polypropylene composite materials with improved properties using supercritical carbon dioxide and a sequential mixing technique [J].

Chen, Chen ;

Samaniuk, Joseph ;

Baird, Donald G. ;

Devoux, Gilles ;

Zhang, Mingqiang ;

Moore, Robert B. ;

Quigley, John P. .

POLYMER, 2012, 53 (06) :1373-1382

[7] Thermal kinetics of montmorillonite nanoclay/maleic anhydride-modified polypropylene nanocomposites [J].

Cheng, Henry Kuo Feng ;

Sahoo, Nanda Gopal ;

Lu, Xuehong ;

Li, Lin .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2012, 109 (01) :17-25

[8] Polymer nanocomposites: The "nano" effect on mechanical properties [J].

Crosby, Alfred J. ;

Lee, Jong-Young .

POLYMER REVIEWS, 2007, 47 (02) :217-229

[9] Nucleation effect of montmorillonite with β-nucleating surface on polymorphous of melt-crystallized isotactic polypropylene nanocomposites [J].

Dai, Xin ;

Zhang, Zishou ;

Wang, Chunguang ;

Ding, Qian ;

Jiang, Juan ;

Mai, Kancheng .

COMPOSITES SCIENCE AND TECHNOLOGY, 2013, 89 :38-43

[10] A novel montmorillonite with β-nucleating surface for enhancing β-crystallization of isotactic polypropylene [J].

Dai, Xin ;

Zhang, Zishou ;

Wang, Chunguang ;

Ding, Qian ;

Jiang, Juan ;

Mai, Kancheng .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2013, 49 :1-8

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