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Chemical modification of poly(2,6-dimethyl- 1,4-phenylene oxide) by electrophitic substitution reaction with isocyanates

✍ Scribed by Sudhakar S. Mahajan; Bhimrao D. Sarwade; Prakash P. Wadgaonkar

Book ID
104686092
Publisher
Springer
Year
1988
Tongue
English
Weight
292 KB
Volume
20
Category
Article
ISSN
0170-0839

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The chemical modification of poly(2,6-dimethyl-l,4-phenylene oxide) (PPO) by electrophilic sulfonylation and acylation of the aromatic structural units has been investigated. A maximum monosubstitution degree of 79.4 has been reached. Higher substitution levels were difficult to achieve because of b

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The methyl groups of poly(2,6-dimethyl-l,4-phenylene oxide) (PPO) were brominated to various extents. Bromobenzylated PPO (BrPPO) samples with degrees of bromination of 16, 37, 50, 69 and 76% were found to be miscible with polystyrene (PS) but BrPPO with a degree of bomination of 92% was immiscible