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首页> 外文会议>Polysaccharide materials: Performance by design >Modified Galactoglucomannans from Forestry Waste-water for Films and Hydrogels
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Modified Galactoglucomannans from Forestry Waste-water for Films and Hydrogels

机译：林业废水中用于膜和水凝胶的改性半乳葡甘露聚糖

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摘要

Hemicelluloses are among the most abundant natural polymers in the world and are consequently a potential source for sustainable materials, that has so far been underexploited. Galactoglucomannans are the principal hemicelluloses in softwoods and can be found in, for example, industrial wood processing waste-water. Currently, we are investigating the fractionation and purification of O-acetyl-galactoglucomannans from newsprint and fiberboard mill waste-waters, as well as the preparation of new barrier films with low oxygen permeation and hydrogel materials from the fractions obtained. Self-supporting films have been formed by solution-casting. Interesting oxygen barrier and mechanical strength properties were achieved for films obtained from a physical blend of O-acetyl-galactoglucomannan and either alginate or carboxymethylcellulose. To create oxygen barrier films with high resistance towards moisture, benzylated derivatives of O-acetyl-galactoglucomannan were made. A hydrogel is a polymeric material that swells in water but does not dissolve, valuable for applications including drug delivery. In order to obtain the right properties, we performed tailored cross-linking to create a flexible network structure. The chemical modification procedure involves a methacrylationrnreaction carried out under mild conditions. Herein we review past work and present some new data on fractionation and purification of galactoglucomannans.
机译：半纤维素是世界上最丰富的天然聚合物之一，因此是迄今为止尚未被充分利用的可持续材料的潜在来源。半乳葡甘露聚糖是软木中的主要半纤维素，并且可以在例如工业木材加工废水中找到。目前，我们正在研究从新闻纸和纤维板厂废水中分离和纯化O-乙酰基-半乳糖甘露聚糖，以及从所得馏分中制备低氧渗透性的新型阻隔膜和水凝胶材料。通过溶液流延形成自支撑膜。对于由O-乙酰基-半乳糖基葡甘露聚糖与藻酸盐或羧甲基纤维素的物理共混物获得的薄膜，获得了令人感兴趣的氧气阻隔性和机械强度性能。为了产生具有高耐湿性的氧气阻隔膜，制备了O-乙酰基-半乳葡甘露聚糖的苄基化衍生物。水凝胶是一种在水中溶胀但不会溶解的聚合材料，对于包括药物输送在内的各种应用都很有价值。为了获得正确的属性，我们执行了量身定制的交叉链接以创建灵活的网络结构。化学修饰程序涉及在温和条件下进行的甲基丙烯酸化反应。本文中，我们回顾了过去的工作，并提出了有关半乳葡甘露聚糖分离和纯化的一些新数据。

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  • 会议地点 Chicago IL(US)
  • 作者

    Margaretha Soederqvist Lindblad; rnOlof Dahlman; rnJohn Sjoeberg; rnAnn-Christine Albertsson;

  • 作者单位

    Department of Fibre and Polymer Technology, Royal Institute of Technology, SE-100 44 Stockholm, Sweden Sodra Cell, Research and Development, SE-430 24 Varobacka, Sweden;

    rnSTFI-Packforsk AB, Box 5604, SE-114 86 Stockholm, Sweden;

    rnDepartment of Fibre and Polymer Technology, Royal Institute of Technology, SE-100 44 Stockholm, Sweden PRV, Box 5055, SE-102 42 Stockholm, Sweden;

    rnDepartment of Fibre and Polymer Technology, Royal Institute of Technology, SE-100 44 Stockholm, Sweden;

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  • 正文语种 eng
  • 中图分类 有机质材料;
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