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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Compositional characterization of AES a graft copolymer based on poly(styrene-co-acrylonitrile) and poly(etyhlene-co-propylene-co-diene)

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Author(s):
Renato Turchet [1] ; Maria I. Felisberti [2]
Total Authors: 2
Affiliation:
[1] UNICAMP. Instituto de Química
[2] UNICAMP. Instituto de Química
Total Affiliations: 2
Document type: Journal article
Source: POLIMEROS-CIENCIA E TECNOLOGIA; v. 16, n. 2, p. 158-164, 2006-06-00.
Abstract

This work aims the characterization of AES, a graft copolymer based on poly(styrene-co-acrylonitrile), SAN, and poly(etyhlene-co-propylene-co-diene), EPDM. AES was submitted to selective extraction of its components: free SAN, EPDM chains and the graft copolymer EPDM-g-SAN. AES and its fractions were characterized by infrared spectroscopy, elemental analysis, differential scanning calorimetry, 13C and ¹H nuclear magnetic resonance. The AES has 65 wt % of EPDM-g-SAN, 13 wt % of free EPDM and 22 wt % of free SAN. EPDM has 69.8 wt % of ethylene, 26.5 wt % of propylene and 4.6 wt % of diene, 2-ethylidene-5-norbonene ENB. SAN presents acrylonitrile/styrene mass ratio of 28/72 and a random distribution of acrylonitrile and styrene comonomers. These results are in agreement with the composition reported by the AES supplier, indicating that the proposed methodology is adequate. (AU)