Tunable Free Volume Structure on the Gas Separation Performance of Thermally Rearranged Poly(benzoxazole-co-imide) Membranes Studied by Positron …

Q Liu, J Liu, P Jia, T Yu, N Qi, W Zhou… - ACS Applied Polymer …, 2023 - ACS Publications
In this work, two series of poly (benzoxazole-co-imide) membranes were synthesized
through thermal rearrangement (TR) reaction at 450° C. Different kinds and proportions of …

High adsorption of Cu (II) in novel thiacalix [4] arene/acrylic polymer/diatomite fast fabricated by electron beam irradiation: Controllable microstructures, adsorption …

X Tang, G Hu, Z Chen, L Qian, C He, T Chen… - Chemical Engineering …, 2024 - Elsevier
Chemical grafting of calix [4] arene is a common method to prepare high-performance calix
[4] arene adsorbents for heavy metals, however, the chemical grafting process consumes …

Microstructure studies of isotactic polypropylene under natural weathering by positron annihilation lifetime spectroscopy

K Ni, J Zhu, X Liao, Y Lv, L Wu, Q Zhang, Z An… - Journal of Polymer …, 2015 - Springer
The microstructure evolution of isotactic polypropylene (PP) exposed to subtropical humid
climate of Guangzhou of China, were investigated by gel permeation chromatography …

Irradiation effects on a glycidylamine epoxy resin system for insulation in fusion reactor

C Wei, W Pan, S Sun, H Liu - Journal of nuclear materials, 2012 - Elsevier
TGPAP resins were cured using different contents of DDM as the hardener, and were
subjected to irradiation in a nuclear fission reactor. The TGPAP/DDM resin systems showed …

Free volume evolution in 50 MeV Li3+ ion-irradiated polymers studied by positron annihilation lifetime spectroscopy

P Singh, R Kumar, R Prasad - Radiation Effects and defects in …, 2013 - Taylor & Francis
This article is aimed at studying the effect of ion irradiation on free volume of
polyethersulphone (PES) and polyamide nylon-6 (PN-6) polymers by positron annihilation …

Effect of compatibilizer on compatibility and pervaporation performance of PC/PHEMA blend membranes

M De Guzman, PY Liu, JT Chen, KL Tung… - Journal of membrane …, 2011 - Elsevier
This study made use of the technique of positron annihilation spectroscopy (PALS) to
examine the effect of a compatibilizer additive on the compatibility in a blend membrane of …

Experimental determination of interface widths in binary polymer blends from free volume measurements

P Ramya, C Ranganathaiah, JF Williams - Polymer, 2012 - Elsevier
Interfaces in binary polymer blends play a pivotal role in moulding their physical properties.
We observe a diffused interface in immiscible and partially miscible binary polymer blends …

Property of ethylene vinyl acetate copolymer in melting processing

Z Chen, P Fang, H Wang, S Zhang… - Journal of applied …, 2006 - Wiley Online Library
The study is focused on the processing behavior of poly (ethylene‐co vinyl acetate)(EVA) in
high temperature, such as 200° C. The specimens are characterized using HAAKE minilab …

Dynamic study of free volume properties in polyethylene/styrene butadiene rubber blends by positron annihilation lifetime method

N Mostafa, EH Ali, M Mohsen - Journal of applied polymer …, 2009 - Wiley Online Library
Positronium (Ps) formation in low and high‐density polyethylene (LDPE and HDPE) and
styrene butadiene rubber (SBR), as well as in their blends (LDPE/SBR: 50/50 and …

Supermolecular structure of poly (propylene-co-ethylene)/poly (ethylene-co-vinyl acetate) blends irradiated with fast electrons. SEM, SAXS and DSC studies

MD Mihaylova, TE Nedkov, VP Krestev… - European polymer …, 2001 - Elsevier
The present study concerns extruded polymer films from blends of i-PP-co-ethylene (PP)
and poly (ethylene-co-vinyl acetate)(EVA), irradiated with fast electrons. SEM studies of the …