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- W21002444 abstract "Work leading to the synthesis of uniformly crosslinked poly-butadiene with iodine tags at both ends of a small percentage of the crosslinking chains is described. The following reactions have been investigated: conversion of dibromopolybutadiene to diiodopolybutadiene; conversion of dihydroxypolybutadiene to polybutadiene diisocyanate; chain extension of polybutadiene diisocyanate with3-dirnethylamino-1, 2-propane-diol to form a linear polybutadiene with pendant dimethylamino groups (PBPA); crosslinking of the PBPA by quaternization of the amine groups with diiodopolybutadiene; and formation of the amine salt of PBPA by treatment with hydrochloric acid.Mechanical properties of PBPA, its HC1 salt, and the cross-linked polybutadiene were determined by free torsional oscillation. Salt formation apparently leads to pseudo-crosslinking of the polymer by association of the ionic groups, so that the polymer exhibits elastomeric behavior between -30° and 40°C. Crosslinking of PBPA byquaternization of the amine groups with diiodopolybutadiene extends the elastic region to 130°C, where creep begins due to degradation of the polymer." @default.
- W21002444 created "2016-06-24" @default.
- W21002444 creator A5047008746 @default.
- W21002444 date "1971-01-01" @default.
- W21002444 modified "2023-09-26" @default.
- W21002444 title "Studies leading to iodine-tagged crosslinked polybutadiene" @default.
- W21002444 doi "https://doi.org/10.7907/7951-nc71." @default.
- W21002444 hasPublicationYear "1971" @default.
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