Effects of chemical constituents on crystalline properties of ethylene ionomers

被引：14

作者：

Ray, AK

机构：

[1] Christian Brothers University, Memphis

来源：

JOURNAL OF THERMAL ANALYSIS | 1996年 / 46卷 / 06期

关键词：

crystalline properties; ethylene ionomers;

D O I：

10.1007/BF01980759

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The effect of % methacrylic acid (%MAA), % neutralization (%N) and ion type (Na+ or Zn++) on the crystalline properties of neutralized ethylene-methacrylic acid copolymers (ionomers) were studied using differential scanning calorimetry (DSC). Two endothermic melting peaks were observed for all the nine ionomers studied, the lower melting point (LMP) due to ordered ionic clusters and the higher melting point (HMP) due to polyethylene crystallites. Effects of %MAA, %N and ion type on LMP and HMP for as-received, aged and annealed samples are compared. Effect of types of pretreatments on LMP and HMP of ionomers at high and low %MAA contents for both ion types are discussed. Most of these results are explained from the point of view of crystalline morphology of ionomers.

引用

页码：1527 / 1539

页数：13

共 13 条

[1]

Bonotto S., 1968, MACROMOLECULES, V1, P510

[2]

EISENBERG A, 1977, ION CONTAINING POLYM, V2

[3]

Holliday L., 1975, IONIC POLYM

[4] THE CRYSTALLIZATION AND FORMATION OF CLUSTER OF ETHYLENE IONOMER DURING PHYSICAL AGING [J].

KOHZAKI, M ;

TSUJITA, Y ;

TAKIZAWA, A ;

KINOSHITA, T .

JOURNAL OF APPLIED POLYMER SCIENCE, 1987, 33 (07) :2393-2402

[5]

LONGWORTH R, 1983, DEV IONIC POLYM I

[6]

LONGWORTH R, 1975, IONIC POLYM, P164

[7] CRYSTALLINITY OF IONOMERS [J].

MARX, CL ;

COOPER, SL .

JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS, 1974, B 9 (01) :19-33

[8]

PINERI M, 1987, NATO ASI SERIES D

[9]

Rees R. W., 1965, POLYMER PREPRINTS, V6, P287

[10]

REES RW, 1966, Patent No. 3264272

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