Modification of nylon 6 by blending with a small amount of a novolac resin has been investigated. Unexpected increased of Tg and tensile modulus and reduction in moisture absorption have been found at levels of novolac incorporation of 1–3 wt %. The small amount of novolac resin also has an effect on the crystallization and nylon 6 crystal structure (α vs. γ form).
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Huang et al. (1993) studied this question.
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