CRYSTALLIZATION OF POLYMER MELTS UNDER FAST COOLING .2. HIGH-PURITY IPP

被引：100
作者：
PICCAROLO, S
SAIU, M
BRUCATO, V
TITOMANLIO, G
机构：
[1] Dipartimento di Ingegneria Chimica Dei Processi E Dei Materiali, Università di Palermo, Palermo
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 1992年 / 46卷 / 04期
关键词：
D O I：
10.1002/app.1992.070460409
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Samples of a high-purity isotactic polypropylene (iPP) were quenched from the melt so as to monitor cooling history. A continuous variation of morphology and crystal structure was obtained with cooling rate. This is discussed in relation to sample thermal history evidencing that cooling history relevant to quenched samples is in the neighborhood of 90-degrees-C. In particular the samples are essentially mesomorphic when at this temperature cooling rates larger than 80-degrees-C/s were adopted, while below a few tens of degrees-C/s only alpha-monocline form is obtained. Densities of quenched samples were compared with predictions of an isokinetic extrapolation of Avrami model of polymer crystallization kinetics.
引用
收藏
页码：625 / 634
页数：10
相关论文
共 23 条
[11]  
HENDRA PJ, 1984, POLYMER, V25, P785, DOI 10.1016/0032-3861(84)90007-7
[12]   STRUCTURE AND PROPERTIES OF POLYPROPYLENE CRYSTALLIZED FROM THE GLASSY STATE [J].
HSU, CC ;
GEIL, PH ;
MIYAJI, H ;
ASAI, K .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1986, 24 (10) :2379-2401
[13]   A NEW TECHNIQUE FOR FOLLOWING RAPID RATES OF CRYSTALLIZATION .2. ISOTACTIC POLYPROPYLENE [J].
MAGILL, JH .
POLYMER, 1962, 3 (01) :35-42
[14]   A NEW METHOD FOR FOLLOWING RAPID RATES OF CRYSTALLIZATION .1. POLY(HEXAMETHYLENE ADIPAMIDE) [J].
MAGILL, JH .
POLYMER, 1961, 2 (02) :221-233
[15]   CRYSTALLIZATION KINETICS STUDY OF NYLON-6 [J].
MAGILL, JH .
POLYMER, 1962, 3 (04) :655-664
[16]   GENERAL TREATMENT OF POLYMER CRYSTALLIZATION KINETICS .2. THE KINETICS OF NON-ISOTHERMAL CRYSTALLIZATION [J].
MALKIN, AY ;
BEGHISHEV, VP ;
KEAPIN, IA ;
ANDRIANOVA, ZS .
POLYMER ENGINEERING AND SCIENCE, 1984, 24 (18) :1402-1408
[17]   GENERAL TREATMENT OF POLYMER CRYSTALLIZATION KINETICS .1. A NEW MACROKINETIC EQUATION AND ITS EXPERIMENTAL-VERIFICATION [J].
MALKIN, AY ;
BEGHISHEV, VP ;
KEAPIN, IA ;
BOLGOV, SA .
POLYMER ENGINEERING AND SCIENCE, 1984, 24 (18) :1396-1401
[18]   POLYMORPHISM IN ISOTACTIC POLYPROPYLENE [J].
MORROW, DR .
JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS, 1969, B 3 (01) :53-&
[19]   AN IMPROVED PERMANGANIC ETCHANT FOR POLYOLEFINES [J].
OLLEY, RH ;
BASSETT, DC .
POLYMER, 1982, 23 (12) :1707-1710
[20]   SELECTIVE ETCHING OF POLYOLEFINES .1. ISOTACTIC POLYPROPYLENE [J].
RYBNIKAR, F .
JOURNAL OF APPLIED POLYMER SCIENCE, 1985, 30 (05) :1949-1961
123