Study on side-chain liquid-crystalline copolymer as a new β-nucleating agent to induce phase behavior of isotactic polypropylene

被引：12

作者：

Sun, Jing ^{[1
]}

Hu, Jian-She ^{[1
]}

Guo, Zhi-Xing ^{[1
]}

Qi, Yang ^{[1
]}

机构：

[1] Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China

来源：

COLLOID AND POLYMER SCIENCE | 2013年 / 291卷 / 03期

关键词：

Isotactic polypropylene; beta-Nucleating agent; Phase behavior; Liquid-crystalline copolymer; SUPERMOLECULAR STRUCTURE; MELTING BEHAVIOR; ALPHA; MORPHOLOGY; GROWTH; POLYSTYRENE; MICROSCOPY; KINETICS; SHEAR; IPP;

D O I：

10.1007/s00396-012-2783-y

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：

The nucleating activity of side-chain liquid-crystalline copolymer, as new beta-nucleating agent (LCP-NA3), towards isotactic polypropylene (iPP) was investigated by differential scanning calorimetry, wide-angle X-ray diffraction, and polarized optical microscopy. The effect of LCP-NA3 content, crystallization temperature, and time on the phase behavior of the iPP has been discussed. The results indicate that the relative content of beta-crystal mainly depends on LCP-NA3 content, crystallization temperature, and time. A high content of beta-crystal can be obtained by the combined effect of the optimum LCP-NA3 concentration, crystallization temperature, and time. The maximum content of beta-crystal reaches 0.63 when the LCP-NA3 content, crystallization temperature, and time are 0.8 wt%, 130 A degrees C, and 1 h, respectively. In addition, LCP-NA3 is identified to have dual nucleating ability for alpha- and beta-crystals under appropriate kinetic conditions.

引用

页码：735 / 742

页数：8

共 48 条

[1] Effect of multi-walled carbon nanotubes on the lamellae morphology of polyamide-6 [J].

Brosse, Anne-Carine ;

Tence-Girault, Sylvie ;

Piccione, Patrick M. ;

Leibler, Ludwik .

POLYMER, 2008, 49 (21) :4680-4686

[2] Crystallization under shear in isotactic polypropylene containing nucleators [J].

Byelov, Dmytro ;

Panine, Pierre ;

Remerie, Klaas ;

Biemond, Edwin ;

Alfonso, Giovanni C. ;

de Jeu, Wim H. .

POLYMER, 2008, 49 (13-14) :3076-3083

[3]

Ellis G, 2004, J MACROMOL SCI PHYS, VB43, P191, DOI [10.1018/MB-120027758, 10.1081/MB-120027758]

[4] Effects of La3+-containing additive on crystalline characteristics of isotactic polypropylene [J].

Feng, JC ;

Chen, MC .

POLYMER INTERNATIONAL, 2003, 52 (01) :42-45

[5] DOUBLE-MELTING BEHAVIOR OF BETA PHASE OF ISOTACTIC POLYPROPYLENE [J].

FUJIWARA, Y .

COLLOID AND POLYMER SCIENCE, 1975, 253 (04) :273-282

[6] STRUCTURES AND PROPERTIES OF INJECTION MOLDINGS OF BETA-CRYSTAL NUCLEATOR-ADDED POLYPROPYLENES .1. EFFECT OF BETA-CRYSTAL NUCLEATOR CONTENT [J].

FUJIYAMA, M .

INTERNATIONAL POLYMER PROCESSING, 1995, 10 (02) :172-178

[7] INFLUENCE OF ADDITIVES ON THE STRUCTURE AND PROPERTIES OF POLYMERS .3. STUDY OF BETA-]ALPHA-TRANSITION IN ISOTACTIC POLYPROPYLENE AT VARIOUS TEMPERATURES AND TIMES OF HEATING [J].

GARBARCZYK, J ;

PAUKSZTA, D .

COLLOID AND POLYMER SCIENCE, 1985, 263 (12) :985-990

[8]

Hu JS, 2009, CHEM J CHINESE U, V30, P1253

[9]

Ikeda N, 1996, WORLD C ZUR SWITZ

[10] How does ''phase transformation toughening'' work in semicrystalline polymers? [J].

KargerKocsis, J .

POLYMER ENGINEERING AND SCIENCE, 1996, 36 (02) :203-210

← 1 2 3 4 5 →