Synthesis and characterization of carboxymethylcellulose grafted with thermoresponsive side chains of high LCST: The high temperature and high salinity self-assembly dependence
作者: Nívia do N. MarquesRosangela de C. BalabanSami HalilaRedouane Borsali
作者单位: 1Univ. Grenoble Alpes, CNRS, CERMAV, 38000 Grenoble, France
2Laboratório de Pesquisa em Petróleo - LAPET, Universidade Federal do Rio Grande do Norte, 59078970 - Natal, RN - Brazil
刊名: Carbohydrate Polymers, 2018, Vol.184 , pp.108-117
来源数据库: Elsevier Journal
DOI: 10.1016/j.carbpol.2017.12.053
关键词: Associating polysaccharidesThermosensitiveSalt-sensitivePolyetheraminesSmart polymers
原始语种摘要: Abstract(#br)Graft copolymers based on carboxymethylcellulose (CMC) and thermosensitive polyetheramines (ethylene oxide/propylene oxide = 33/10 and 1/9) were prepared in water, at room temperature, by using a carbodiimide and N -hydroxysuccinimide as activators. SLS was applied to obtain M w , A 2 and R g of CMC and its derivatives. Amide linkages were evidenced by FTIR and grafting percentage was determined by 1 H NMR. TGA demonstrated that copolymers were thermally more stable than their precursors. DLS, UV-vis and rheological measurements revealed that properties were salt- and thermo-responsive and linked to the polysaccharide/polyetheramine ratio and the hydrophobicity of the graft. None of the copolymers showed cloud point temperature (Tcp) in water, but they turned turbid in saline...
全文获取路径: Elsevier  (合作)
影响因子:3.479 (2012)

  • hydrophobic 疏水的
  • chains 镣铐
  • temperature 温度
  • saline 盐的
  • intermolecular 分子间的
  • propylene 丙烯
  • rheological 流变学的
  • slight 轻的
  • linked 连接的
  • carbodiimide 二亚胺碳