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Chain branching glass transition temperature

As shown in Table 3, the glass-transition temperatures of the amorphous straight-chain alkyl vinyl ether homopolymers decrease with increasing length of the side chain. Also, the melting points of the semicrystalline poly(alkyl vinyl ether)s increase with increasing side-chain branching. [Pg.516]

Glass-Transition Temperature. The T of PVP is sensitive to residual moisture (75) and unreacted monomer. It is even sensitive to how the polymer was prepared, suggesting that MWD, branching, and cross-linking may play a part (76). Polymers presumably with the same molecular weight prepared by bulk polymerization exhibit lower T s compared to samples prepared by aqueous solution polymerization, lending credence to an example, in this case, of branching caused by chain-transfer to monomer. [Pg.528]

Figure 11.13. Effect of side-chain branching on the melting point and glass transition temperature of... Figure 11.13. Effect of side-chain branching on the melting point and glass transition temperature of...
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See also in sourсe #XX -- [ Pg.299 ]



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