The influence of stretching on tensile strength and solubility of poly(vinyl alcohol) fibres

D. Heikens, A.C.A.M. Bleijenberg, J.J.M. Hoppenbrouwers, W.M. Barentsen

    Research output: Contribution to journalArticleAcademicpeer-review

    2 Citations (Scopus)

    Abstract

    The strength of wet-spun poly(vinyl alcohol) (pva) fibres is given as function of bath-stretching, wet-stretching and hot-stretching. In the two equations derived for strength of wet-stretching and hot-stretching the complex influence of the bath-stretching and hot-stretching is demonstrated. The bath-stretching is connected with a pure orientation effect and the residence time in the coagulating bath which is a measure for the ‘freshness’ of the fibre. The hot-stretching can be separated in a pure orientation effect and a crystallization effect. Fibres of the pva, used in the experiments, were soluble in boiling water. After shrinkage of the fibres at temperatures near the temperature of hot-stretching, the dissolution temperature can be raised. Insoluble pva fibres were prepared after removing most of the bulky residual ester groups.
    Original languageEnglish
    Pages (from-to)797-801
    Number of pages5
    JournalPolymer
    Volume12
    Issue number12
    DOIs
    Publication statusPublished - 1971

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