Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences (CAS), Qingdao, 266101, Shandong, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
Liaoning Key Laboratory of Pulp and Papermaking Engineering, Dalian Polytechnic University, Dalian, 116034, Liaoning, China.
Int J Biol Macromol. 2018 Mar;108:1255-1260. doi: 10.1016/j.ijbiomac.2017.11.036. Epub 2017 Nov 8.
Huge amount of waste hemicellulose liquor annually produced in China was burned or discharged into surrounding environment without further sufficient utilization, causing severely environmental issues. In order to solve this problem, this study aimed to find a way to effectively use aqueous waste hemicellulose solution from viscose fiber mills for bio-based materials development. Hereby, polyacrylamide-hemicellulose hybrid films were synthesized through the copolymerization of acrylamide (AM) monomers and hemicellulose initiated by potassium persulfate/N,N,N',N'-tetramethylethylenediamine (KPS/TMEDA) redox initiator system with cross-linker N,N-Methylene-bis(acrylamide) (MBA). The as-prepared films had been further characterized by Fourier transform infrared (FT-IR), scanning electron microscopy (SEM), gel permeation chromatography (GPC), mechanical test, light transmittance determination and oxygen transmission rate measurement. The results showed that the hybrid films possessed many advantages, such as ambient-temperature water solubility, good recyclability, high stretchable properties and low oxygen permeability. These properties implied their application potentials in several areas, such as packaging electronics products, food and pesticide. Moreover, the utilization of aqueous waste hemicellulose solution from viscose fiber mills will have huge market potential and economic benefits.
中国每年产生大量的纤维素废液，如果不进一步充分利用，就会被燃烧或排放到周围环境中，从而造成严重的环境问题。为了解决这个问题，本研究旨在寻找一种有效利用粘胶纤维厂废水中纤维素溶液的方法，用于生物基材料的开发。为此，通过过硫酸钾/四甲基乙二胺（KPS/TMEDA）氧化还原引发剂体系引发丙烯酰胺（AM）单体与纤维素的共聚反应，合成了聚丙烯酰胺-纤维素杂化膜，并用交联剂 N，N-亚甲基双丙烯酰胺（MBA）进行交联。通过傅里叶变换红外光谱（FT-IR）、扫描电子显微镜（SEM）、凝胶渗透色谱（GPC）、力学性能测试、透光率测定和氧气透过率测定对所制备的薄膜进行了进一步的表征。结果表明，杂化膜具有许多优点，如环境温度下的水溶性、良好的可回收性、高拉伸性能和低氧气透过率。这些特性意味着它们在包装电子产品、食品和农药等领域具有应用潜力。此外，利用粘胶纤维厂的废纤维素溶液具有巨大的市场潜力和经济效益。
