Polyamide/acrylic rubber blend studied by positron annihilation

被引：0

作者：

Debowska, M

Rudzinska-Girulska, J

Suzuki, T

Piglowski, J

Chen, ZQ

机构：

[1] Univ Wroclaw, Inst Phys Expt, PL-50204 Wroclaw, Poland

[2] KEK, High Energy Accelerator Res Org, Radiat Sci Ctr, Tsukuba, Ibaraki 3050801, Japan

[3] Wroclaw Univ Technol, Inst Organ & Polymer Technol, PL-5037 Wroclaw, Poland

[4] Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 3058573, Japan

来源：

POSITRON ANNIHILATION - ICPA-12 | 2001年 / 363-3卷

关键词：

free volume; polymer blends; positron annihilation;

D O I：

暂无

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Semicrystalline polyamide 6 (PA), acrylic rubber P(n-BA-co-MMA) and their blend PA/P(n-BA-co-MMA) containing 75 wt.-% of PA have been examined with use of positron annihilation lifetime spectroscopy (PALS) in the range from 40 K to 375 K. Positive deviations from the linear additivity law of the constituent lifetime tau (3), average size of the free volume holes V-FV, and negative one of the longest-lived component intensity, I-3, are observed. Systematic shift of the position of the maximum of the distributions of free volume towards higher free volume values is observed with rising temperature. The deduced hole volume expansion coefficients below and above glass transition temperature have values two orders of magnitude higher than thermal expansivities of the total volume known from literature.

引用

页码：300 / 302

页数：3