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Improved Accessibility and Reactivity of Dissolving Pulp for the Viscose Process: Pretreatment with Monocomponent Endoglucanase

机译:用于粘胶工艺的溶解浆的改善的可及性和反应性:单组分内切葡聚糖酶预处理

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摘要

A high accessibility is an essential prerequisite for a homogeneous substitution of cellulose material.In this study,chemical and enzymatic pretreatments to increase the accessibility of cellulose materials have been investigated.Dissolving pulp has been treated with a monocomponent endoglucanase.Fock's method,a microscale process similar to the viscose process,showed an increase in cellulose yield.Simultaneously,the viscosity decreased.To clarify whether the increase in reactivity was due solely to the decrease in the degree of polymerization,the dissolving pulp was also subjected to acid hydrolysis.At a given viscosity level,the enzymatic pretreated pulp had a higher reactivity than the pulp subjected to acid hydrolysis.To achieve 100% reactivity,according to Fock,the acid-treated pulp showed a lower molecular weight compared to the enzymatic-treated pulp.A monocomponent endoglucanase can thus be used to increase the reactivity and accessibility of dissolving pulp in the viscose process.
机译:高可及性是纤维素材料均质替代的必要先决条件。在这项研究中,已研究了化学和酶促预处理以增加纤维素材料的可及性。单浆内切葡聚糖酶处理了溶解浆。Fock方法,微尺度工艺类似于粘胶工艺,显示出纤维素收率的增加。同时,粘度降低。为澄清反应性的增加是否仅仅是由于聚合度的降低,溶解浆也进行了酸水解。在给定的粘度水平下,酶预处理的纸浆比经过酸水解的纸浆具有更高的反应性。为了达到100%的反应性,根据Fock的说法,酸处理的纸浆比酶处理的纸浆具有更低的分子量。因此,内切葡聚糖酶可用于增加粘胶浆中溶解浆的反应性和可及性ess。

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