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棕榈果串和甘蔗渣农业废弃物中羧甲基纤维素的物理性质：过氧化氢脱木质素的影响

Physical Properties of Carboxymethyl Cellulose from Palm Bunch and Bagasse Agricultural Wastes: Effect of Delignification with Hydrogen Peroxide.

作者信息

Suriyatem Rungsiri, Noikang Nichaya, Kankam Tamolwan, Jantanasakulwong Kittisak, Leksawasdi Noppol, Phimolsiripol Yuthana, Insomphun Chayatip, Seesuriyachan Phisit, Chaiyaso Thanongsak, Jantrawut Pensak, Sommano Sarana Rose, Ngo Thi Minh Phuong, Rachtanapun Pornchai

机构信息

Division of Cosmetic Science and Health Products, School of Pharmacy, Eastern Asia University, Pathum Thani 12110, Thailand.

School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand.

出版信息

Polymers (Basel). 2020 Jul 7;12(7):1505. doi: 10.3390/polym12071505.

DOI:10.3390/polym12071505
PMID:32645875
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7407813/
Abstract

The aim of this work was to synthesize carboxymethyl cellulose (CMC) and produce CMC films from the cellulose of palm bunch and bagasse agricultural waste. The effect of various amounts of HO (0-40% /) during delignification on the properties of cellulose, CMC, and CMC films was studied. As the HO content increased, yield and the lignin content of the cellulose from palm bunch and bagasse decreased, whereas lightness () and whiteness index (WI) increased. FTIR confirmed the substitution of a carboxymethyl group on the cellulose structure. A higher degree of substitution of CMC from both sources was found when 20%-30% HO was employed. The trend in the and WI values of each CMC and CMC film was related to those values in their respective cellulose. Bleaching each cellulose with 20% HO provided the cellulose with the highest viscosity and the CMC films with the greatest mechanical (higher tensile strength and elongation at break) and soluble attributes, but the lowest water vapor barrier. This evidence indicates that cellulose delignification with HO has a strong effect on the appearance and physical properties of both CMCs.

摘要

这项工作的目的是合成羧甲基纤维素（CMC），并利用棕榈束和甘蔗渣农业废弃物中的纤维素制备CMC薄膜。研究了脱木质素过程中不同用量的过氧化氢（0 - 40% /）对纤维素、CMC及CMC薄膜性能的影响。随着过氧化氢含量的增加，棕榈束和甘蔗渣纤维素的得率和木质素含量降低，而亮度（ ）和白度指数（WI）增加。傅里叶变换红外光谱（FTIR）证实了羧甲基基团在纤维素结构上的取代。当使用20% - 30%的过氧化氢时，两种来源的CMC取代度更高。每种CMC和CMC薄膜的 和WI值趋势与其各自纤维素中的这些值相关。用20%的过氧化氢对每种纤维素进行漂白，可使纤维素具有最高的粘度，使CMC薄膜具有最大的机械性能（更高的拉伸强度和断裂伸长率）和溶解性，但水蒸气阻隔性最低。这一证据表明，用过氧化氢对纤维素进行脱木质素处理对两种CMC的外观和物理性能有强烈影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f55a/7407813/3b08c652069c/polymers-12-01505-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f55a/7407813/54c7b5af7e99/polymers-12-01505-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f55a/7407813/4104432fa443/polymers-12-01505-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f55a/7407813/1671b64d984d/polymers-12-01505-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f55a/7407813/c5be731237c0/polymers-12-01505-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f55a/7407813/c43a1a286228/polymers-12-01505-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f55a/7407813/3b08c652069c/polymers-12-01505-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f55a/7407813/54c7b5af7e99/polymers-12-01505-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f55a/7407813/4104432fa443/polymers-12-01505-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f55a/7407813/1671b64d984d/polymers-12-01505-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f55a/7407813/c5be731237c0/polymers-12-01505-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f55a/7407813/c43a1a286228/polymers-12-01505-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f55a/7407813/3b08c652069c/polymers-12-01505-g006.jpg

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