Synthesis and properties of xylenyl ether-dimethylsiloxane triblock polymers

doi:10.1007/BF00257001

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Synthesis and properties of xylenyl ether-dimethylsiloxane triblock polymers

Published Feb 1, 1988 · R. Allen, J. Hedrick

Polymer Bulletin

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Abstract

Poly(xylenyl ether-dimethylsiloxane) (PXE-PDMS) triblock polymers were successfully prepared by a hydroxyl-silylamine condensation route as potential modifiers for poly(styrene) (PS) and related materials. This synthesis route affords A-B-A triblock polymers where A represents PXE and B poly(dimethylsiloxane). These new copolymers are more versatile than poly(styrene-dimethylsiloxane) block polymers (as poly(styrene) modifiers) since the PXE is miscible with PS at all molecular weights and compositions. These triblock polymers formed unimodal molecular weight distributions, transparent and tough films, and microphase-separated morphologies as determined by a number of techniques.

Study Snapshot

PXE-PDMS triblock polymers are versatile, transparent, and tough modifiers for poly(styrene) and related materials, offering unimodal molecular weight distributions and microphase-separated morphologies.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

Synthesis and properties of xylenyl ether-dimethylsiloxane triblock polymers

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