Characterizing blends of linear low-density and low-density polyethylene by DSC

被引：9
作者：
Cran, MJ
Bigger, SW
Scheirs, J
机构：
[1] Victoria Univ Technol, Sch Mol Sci, Melbourne, Vic 8001, Australia
[2] ExcelPlas Australia Ltd, Edithvale 3196, Australia
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2005年 / 81卷 / 02期
关键词：
DSC; LDPE; LLDPE; polyethylene blends; thermal fractionation;
D O I：
10.1007/s10973-005-0786-3
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A two-step isothermal annealing (TSIA) procedure is described that enables the endothermic peaks of low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE) and their blends, to be satisfactorily resolved during analysis by differential scanning calorimetry. A modified form of multistep isothermal annealing, the TSIA procedure produces a highly characteristic profile of the blend components by facilitating the segregation of the phases based on branch density. It is proposed that the TSIA procedure may have significant merit in the identification and quantification of the components in an unknown blend as well as increasing the sensitivity in analytical procedures aimed at blend component quantification.
引用
收藏
页码：321 / 327
页数：7
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