A comparison of properties between carboxylated acrylic rubbers prepared by γ-ray irradiation and chemical method
- 1. China Science and Technology Univ., Hefei (China). Dept. of Polymer Science adn Engineering
- 2. China Science and Technology Univ., Hefei (China). State Key Laboratory of Fire Science
Description
Acrylic rubbers (ACM) carboxylated by acrylic acid or itaconic acid were prepared by 60Co γ-ray or chemical-initiator (K2S2O8) induced emulsion copolymerization. The polymers were characterized by Fourier transform infrared spectroscopy (FT-IR). Acid value, molecular weight and polydispersity index (PDI) of the polymers were determined by non-aqueous titration method and gel permeation chromatography (GPC), respectively. Vulcanization and mechanical properties of the filled ACM were studied by rheometric measurement, gel fraction analysis, mechanical property tests and dynamic mechanical thermal analysis (DMTA). The results show that the ACMs prepared by γ-ray irradiation have lower acid value, higher molecular weight and narrower PDI than chemically prepared ACMs of the same compositions. The itaconic acid carboxylated ACM has better cure characteristics and mechanical properties than the acrylic acid carboxylated ACM. The itaconic acid carboxylated ACM prepared by γ-ray irradiation has higher gel fraction and better cure characteristics as well as mechanical properties than that prepared by chemical method. (authors)
Additional details
Publishing Information
- Journal Title
- Journal of Radiation Research and Radiation Processing
- Journal Volume
- 24
- Journal Issue
- 5
- Journal Page Range
- p. 262-270
- ISSN
- 1000-3436
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 38093675
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- ACRYLIC ACID; CARBOXYLATION; CHEMICAL PREPARATION; COBALT 60; COMPARATIVE EVALUATIONS; COPOLYMERIZATION; CROSS-LINKING; EMULSIONS; FOURIER TRANSFORMATION; GAMMA RADIATION; GEL PERMEATION CHROMATOGRAPHY; INFRARED SPECTRA; IRRADIATION; ITACONIC ACID; MECHANICAL PROPERTIES; MOLECULAR WEIGHT; PH VALUE; RUBBERS; TITRATION; VULCANIZATION
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBOXYLIC ACIDS; CHEMICAL ANALYSIS; CHEMICAL REACTIONS; CHROMATOGRAPHY; COBALT ISOTOPES; COLLOIDS; DICARBOXYLIC ACIDS; DISPERSIONS; ELASTOMERS; ELECTROMAGNETIC RADIATION; EVALUATION; INTEGRAL TRANSFORMATIONS; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MINUTES LIVING RADIOISOTOPES; MONOCARBOXYLIC ACIDS; NUCLEI; ODD-ODD NUCLEI; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; POLYMERIZATION; POLYMERS; QUANTITATIVE CHEMICAL ANALYSIS; RADIATIONS; RADIOISOTOPES; SEPARATION PROCESSES; SPECTRA; SYNTHESIS; TRANSFORMATIONS; VOLUMETRIC ANALYSIS; YEARS LIVING RADIOISOTOPES
Optional Information
- Notes
- 4 figs., 4 tabs., 24 refs.