DETERMINATION OF 1-BUTENE DISTRIBUTION IN LLDPE BY DSC ANALYSIS AFTER THERMAL FRACTIONATED CRYSTALLIZATION

被引：27

作者：

BALBONTIN, G

CAMURATI, I

DALLOCCO, T

FINOTTI, A

FRANZESE, R

VECELLIO, G

机构：

[1] G. Natta" Research Center, Ferrara, 44100

来源：

ANGEWANDTE MAKROMOLEKULARE CHEMIE | 1994年 / 219卷

关键词：

D O I：

10.1002/apmc.1994.052190112

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 chemical composition distribution (CCD) of LLDPE (1-butene comonomer) has been studied by thermal analysis. After an opportune thermal treatment of the polymers, thermal fractionated crystallization (TFC), the melting endotherms have been subdivided in areas with fixed temperature ranges. The distribution of the endotherms in different areas gave a semiquantitative idea of the CCD. The comparison with thermal rising elution fractionation and C-13 NMR data of the whole polymers and fractions showed fairly good correlations. An approximate evaluation of the average ethylene sequence length was also obtained.

引用

页码：139 / 160

页数：22

共 43 条

[1] EVALUATION OF THE HETEROGENEITY IN LINEAR LOW-DENSITY POLYETHYLENE COMONOMER UNIT DISTRIBUTION BY DIFFERENTIAL SCANNING CALORIMETRY CHARACTERIZATION OF THERMALLY TREATED SAMPLES [J].