SIDE-CHAIN CRYSTALLIZATION AND MOBILITY OF POLY(GAMMA-STEARYL-L-GLUTAMATE)

被引：11

作者：

COLOMER, FJR

RIBELLES, JLG

MACIA, JL

GUERRA, SM

机构：

[1] UNIV POLITECN VALENCIA, ESCUELA TECN SUPER INGN IND, THERMODYNAM & PHYS CHEM LAB, CAMINO VERA SN, E-46020 VALENCIA, SPAIN

[2] UNIV POLITECN VALENCIA, ESCUELA TECN SUPER INGN IND BARCELONA, DEPT CHEM ENGN, E-08028 BARCELONA, SPAIN

[3] UNIV POLITECN VALENCIA, ESCUELA TECN SUPER INDN IND, THERMODYNAM & PHYS CHEM LAB, E-46020 VALENCIA, SPAIN

来源：

POLYMER | 1991年 / 32卷 / 09期

关键词：

POLY(GAMMA-STEARYL-L-GLUTAMATE); SIDE-CHAIN CRYSTALLIZATION; PHASE TRANSITIONS; DIELECTRIC RELAXATION;

D O I：

10.1016/0032-3861(91)90400-D

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Two phase transitions have been found in poly(gamma-stearyl-L-glutamate) by using differential scanning calorimetry (d.s.c) and X-ray diffraction techniques. These transitions define the existence of three phases, A, B and C, in order of increasing temperature. The A-B transition involves both the melting of the side-chain crystallites and the rearrangement of the helices. The kinetics of side-chain crystallization and those of the formation of phase B are determined by d.s.c. The side-chain mobility in phase A has been studied by measuring the dielectric relaxation spectrum of the sample as a function of the degree of crystallization.

引用

页码：1642 / 1646

页数：5

共 18 条

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

Avrami, M .

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

[2]

COLOMER FR, 1989, THESIS U POLYTECHNIC

[3]

COLOMER FR, 1989, POLYMER, V30, P949

[4] COMPARATIVE MECHANICAL AND DIELECTRIC RELAXATIONAL STUDY OF LOW-DENSITY POLYETHYLENE [J].

COLOMERVILANOVA, P ;

MONTSERRATRIBAS, S ;

RIBESGREUS, MA ;

MESEGUERDUENAS, JM ;

GOMEZRIBELLES, JL ;

DIAZCALLEJA, R .

POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING, 1989, 28 (7-8) :635-647

[5] DIELECTRIC-RELAXATION STUDY OF LOW-DENSITY POLYETHYLENE BY THERMALLY STIMULATED DEPOLARIZATION CURRENTS AND THERMAL SAMPLING [J].

DUENAS, JMM ;

RIBELLES, JLG ;

CALLEJA, RD .

JOURNAL OF APPLIED POLYMER SCIENCE, 1989, 37 (06) :1645-1653

[6] RATES OF CRYSTALLIZATION OF POLYETHYLENE FRACTIONS BY CALORIMETRY [J].

FATOU, JMG ;

BARRALES.JM .

JOURNAL OF POLYMER SCIENCE PART A-2-POLYMER PHYSICS, 1969, 7 (10PA) :1755-&

[7] MELTING POINTS OF LINEAR-CHAIN HOMOLOGS - NORMAL PARAFFIN HYDROCARBONS [J].

FLORY, PJ ;

VRIJ, A .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1963, 85 (22) :3548-&

[8] SIDE-CHAIN CRYSTALLINITY .1. HEATS OF FUSION AND MELTING TRANSITIONS ON SELECTED HOMOPOLYMERS HAVING LONG SIDE CHAINS [J].

JORDAN, EF ;

FELDEISEN, DW ;

WRIGLEY, AN .

JOURNAL OF POLYMER SCIENCE PART A-1-POLYMER CHEMISTRY, 1971, 9 (07) :1835-+

[9] DIELECTRIC RELAXATIONS IN POLY(GAMMA-N-ALKYL L-GLUTAMATE)S .2. STUDY OF RELAXATION DUE TO MOTION OF THE SIDE-CHAIN AND THAT DUE TO MOTION OF THE MAIN CHAIN [J].

KAKIZAKI, M ;

NAKAYAMA, H ;

HIDESHIMA, T .

POLYMER JOURNAL, 1986, 18 (02) :141-151

[10]

MATSUSHIMA N, 1973, J MACROMOL SCI PHY E, V8, P413

← 1 2 →