Reversible local melting in polymer crystals

被引：85

作者：

Okazaki, I ^{[1
]}

Wunderlich, B ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 1997年 / 18卷 / 04期

关键词：

D O I：

10.1002/marc.1997.030180407

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 melting of poly(ethylene terephthalate) is analyzed by quasi-isothermal, temperature-modulated differential scanning calorimetry. The measurement is done by sinusoidally changing the temperature in the melting range (+/-1.0 K). In the melting range a small portion of the sample melts reversibly. This observation is taken as a direct observation of the reversibility of melting of specific macromolecules as long as they are melting only partially and need no molecular nucleation for recrystallization.

引用

页码：313 / 318

页数：6

共 16 条

[1] HEAT-CAPACITY MEASUREMENT BY MODULATED DSC AT CONSTANT-TEMPERATURE [J].

BOLLER, A ;

JIN, Y ;

WUNDERLICH, B .

JOURNAL OF THERMAL ANALYSIS, 1994, 42 (2-3) :307-330

[2] MOLECULAR SEGREGATION AND NUCLEATION OF POLY(ETHYLENE OXIDE) CRYSTALLIZED FROM THE MELT .2. KINETIC-STUDY [J].

CHENG, SZD ;

WUNDERLICH, B .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1986, 24 (03) :595-617

[3] MOLECULAR SEGREGATION AND NUCLEATION OF POLY(ETHYLENE OXIDE) CRYSTALLIZED FROM THE MELT .1. CALORIMETRIC STUDY [J].

CHENG, SZD ;

WUNDERLICH, B .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1986, 24 (03) :577-594

[4] MODULATED DIFFERENTIAL SCANNING CALORIMETRY [J].

GILL, PS ;

SAUERBRUNN, SR ;

READING, M .

JOURNAL OF THERMAL ANALYSIS, 1993, 40 (03) :931-939

[5] STUDY OF MOLECULAR FRACTIONATION DURING CRYSTALLIZATION OF POLYMERS [J].

MEHTA, A ;

WUNDERLICH, B .

COLLOID AND POLYMER SCIENCE, 1975, 253 (03) :193-205

[6]

OKAZAKI I, 1997, IN PRESS MACROMOLECU

[7] A NEW APPROACH TO THE CALORIMETRIC INVESTIGATION OF PHYSICAL AND CHEMICAL-TRANSITIONS [J].

READING, M ;

ELLIOTT, D ;

HILL, VL .

JOURNAL OF THERMAL ANALYSIS, 1993, 40 (03) :949-955

[8]

READING M, 1993, TRENDS POLYM SCI, V8, P248

[9]

Ubbelohde A.R.J.P., 1965, Melting and Crystal Structure

[10] SEEDING OF SUPERCOOLED POLYETHYLENE WITH EXTENDED CHAIN CRYSTALS [J].

WUNDERLICH, B ;

CORMIER, CM .

JOURNAL OF PHYSICAL CHEMISTRY, 1966, 70 (06) :1844-+

← 1 2 →