POLYMERIZATION OF STYRENE, METHYL METHACRYLATE, AND ACRYLONITRILE ONTO WOOL BY GAMMA IRRADIATION. (PRELIMINARY REPORT)
Styrene, methyl methacrylate, and acrylonitrile were polymerized onto wool by irradiating it in the solution of each of these monomers by the gamma rays. The radiation doses applied ranged from 2 x 10/sup 5/ to 4 x 10/sup 6/ roentgens. A considerable amount of polymer was fixed onto wool after thorough extraction, which was defined as the amount of grafting. The stress-strain curves of fibers grafted moderately by the monomers are modified with the result that the initial modulus, stress at yield point, and tensile strength in dry and wet state are increased, while the large extensibility characteristic to wool is weli retained. Extremely highly grafted fibers lose the original character of wool and become brittle. Supercontraction is reduced by graft ing the wool moderately by the monomers, but, when the amount of grafting is too large, the character of wool is overcome by that of synthetic polymer. Microscopic examination revealed that the scaies of fibers grafted highly by styrene are splitted hither and thither giving spaces to the grafting polymer. Association of synthetic polymer with wool cannot be simply attributed to grafting. (auth)
- Research Organization:
- Kyoto Univ.
- NSA Number:
- NSA-17-027900
- OSTI ID:
- 4687336
- Journal Information:
- Bulletin of the Institute for Chemical Research, Kyoto University (Japan), Journal Name: Bulletin of the Institute for Chemical Research, Kyoto University (Japan) Vol. Vol: 41; ISSN BICRA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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