Swelling kinetics of cellulose / chondroitin sulfate membranes crosslinked with borax

IF 4.8 2区工程技术 Q1 MATERIALS SCIENCE, PAPER & WOOD Cellulose Pub Date : 2024-12-05 DOI:10.1007/s10570-024-06264-2

Juliano Brisola, Mayara Thamela Pessoa Paiva, Suzana Mali, Gizilene Maria de Carvalho

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Abstract

The use of by-products from the wood industry as an alternative to obtaining cellulose, using an eco-friendly process is essential for the sustainable production of high value-added bioproducts. In this research, the cellulose/chondroitin sulfate membranes were obtained using saw dust as the cellulose source. Initially, cellulose was extracted using peracetic acid (PA) in one (Cel1) and two cycles (Cel2) and mercerized with NaOH. Analysis of the products obtained by X-ray diffraction (WAXD), Fourier transform infrared spectroscopy (FTIR) and Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV–Vis DRS) confirmed that the extracted cellulose was type II and that the reduction of lignin (from 36 to 3.5%) did not depend on the number of bleaching cycles. Membranes with and without the addition of borax were obtained by dissolving cellulose in NaOH/urea/H2O (7/12/81% m/m), mixed with chondroitin sulfate (SC) in proportions 100/0; 90/10; 80/20 and 70/30 (% m/m). The effect of SC contents and the presence of borax on the properties of membranes produced was investigated. The results showed that the swelling ratio, equilibrium water content and kinetic mechanism of water absorption were influenced by the presence of borax and the amount of chondroitin sulfate. The results demonstrated that the properties of Cel/SC membranes could be modulated by the composition and had potential for application in the biomedical area.

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硼砂交联纤维素/硫酸软骨素膜的溶胀动力学

利用木材工业的副产品作为获取纤维素的替代品，使用生态友好的工艺对于可持续生产高附加值生物产品至关重要。本研究以锯末为纤维素源，制备纤维素/硫酸软骨素膜。最初，纤维素是用过氧乙酸（PA）在一个（Cel1）和两个循环（Cel2）中提取的，然后用NaOH丝光。通过x射线衍射（WAXD）、傅里叶变换红外光谱（FTIR）和紫外-可见漫反射光谱（UV-Vis DRS）对产物进行分析，证实提取的纤维素为II型纤维素，木质素的还原（从36%降至3.5%）与漂白次数无关。将纤维素溶解在NaOH/尿素/H2O （7/12/81% m/m）中，与硫酸软骨素（SC）以100/0的比例混合，得到硼砂添加和不添加硼砂的膜；90/10;80/20和70/30 （% m/m）。研究了SC含量和硼砂的存在对膜性能的影响。结果表明，硼砂的存在和硫酸软骨素的用量对溶胀率、平衡含水量和吸水动力学机制均有影响。结果表明，该组合物可调节细胞/SC膜的性能，在生物医学领域具有潜在的应用前景。图形抽象

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来源期刊

Cellulose 工程技术-材料科学：纺织

CiteScore

10.10

自引率

10.50%

发文量

580

审稿时长

3-8 weeks

期刊介绍： Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.