Superabsorbent fibers and cellulose hydrogels

高吸水性纤维和纤维素水凝胶

• 批准号: 463739-2014
• 负责人: vandeVen, Theodorus
• 金额: $ 5.46万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=577093
• 关键词: Superabsorbent; fibers; cellulose; hydrogels

Summary NSERC/CRD proposal "Superabsorbent fibers and cellulose hydrogels". Superabsorbent fibers are promising candidates for superabsorbent papers, such as wipes, diapers, etc. Other cellulose products able to take up large amounts of water are cellulose hydrogels. Both superabsorbent fibers and cellulose hydrogels need to be optimized for water absorbency, strength, processing conditions, interactions with non-modified cellulose, etc. The advantages of superabsorbent cellulose fibers and hydrogels are that they are "green" (i.e. produced in an aqueous process) and made from renewable materials. In the proposed research we will focus on: (i) Superabsorbent fibers, especially optimizing their fabrication, studying their morphological changes upon swelling, their drying and rewetting characteristics, and their rheology. Pilot paper machine trials will be done as well; (ii) Cellulose hydrogels, made from cellulose fibrils, cellulose nanofibers, chemically modified nanocrystalline cellulose and from chemically modified dissolved cellulose. These gels will be fully characterized and their rheology will be studied. Certain gels can be made into dopes for the spinning of textile fibers. Pilot trials on a spinneret will be performed to optimize the properties of cellulose textile fibers.

NSERC/CRD 提案“超吸收性纤维和纤维素水凝胶”摘要。 超吸收性纤维是超吸收性纸的有前途的候选者，例如擦拭巾、尿布等。其他能够吸收大量水的纤维素产品是纤维素水凝胶。超吸水性纤维和纤维素水凝胶都需要在吸水性、强度、加工条件、与未改性纤维素的相互作用等方面进行优化。超吸水性纤维素纤维和水凝胶的优点是它们是“绿色的”（即在水性工艺中生产）并且由可再生材料制成。在拟议的研究中，我们将重点关注：（i）超吸水性纤维，特别是优化其制造，研究其膨胀时的形态变化、干燥和再润湿特性以及流变学。还将进行造纸机中试； (ii)纤维素水凝胶，由纤维素原纤维、纤维素纳米纤维、化学改性的纳米晶纤维素和化学改性的溶解纤维素制成。这些凝胶将被充分表征并研究它们的流变学。某些凝胶可以制成用于纺织纤维纺丝的纺丝液。将在喷丝头上进行试点试验，以优化纤维素纺织纤维的性能。