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Two series of random copolymers of N-isopropylacrylamide (NIPAAm) and comonomers derived from methacrylic acid with a different number of methylene units as hydrophobic spacers (n=4, 7 and 10) were synthesized via free radicals. The first series was prepared having the acid groups methoxy-protected while the second series have the acid groups free. The NIPAAm-copolymers of both series were prepared...
Simultaneous differential thermal analysis and thermogravimetry (DTA-TG) was applied to quality control of nylon 6,6 composites reinforced with mixed glass and carbon fibres. A methodology is described for the evaluation of 13 parameters of virgin and waste composite materials. Three significant parameters were identified for quality control of the composites using statistical methods. The application...
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