Synthesis and Structure Characterization of Acid-Catalyzed Glucose Homopolymer and Glucosyl Guar Gum Copolymer

被引：0
|
作者：
Li M. [1 ]
Xiao Y. [1 ]
Xu K. [1 ]
Fan M. [1 ]
Wang K. [1 ]
机构：
[1] Polymer Research Institute of Sichuan University, Chengdu
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2020年 / 36卷 / 10期
关键词：
Copolymerization; Glucose; Glycosyl linkage; Guar gum; Molar substitution degree;
D O I：
10.16865/j.cnki.1000-7555.2020.0228
中图分类号：
学科分类号：
摘要：
Although branched-chain polysaccharides play an important role in the field of biomedicine and materials, their applications are still relatively limited due to the complex and inefficient synthesis methods. In this paper, a series of oligo-glucose and glucosyl- guar gum were synthesized through green and efficient solid state polymerization, by using glucose and guar gum as raw material, and acid as catalyst. The optimized homo-polymerization conditions are as follows: the molar fraction of citric acid is 20%, the reaction temperature is 110℃, and the reaction time is 9 h. The structure analysis of oligo-glucose indicate that the main chains of oligo-glucose are mainly composed of 1,6-linkage glucosyl residue, the highest polymerization degree of oligo-glucose can reach 6. The optimized copolymerization condition is that the mass ratio of glucose to guar gum is 3:1 (the system is heated at 115℃ for 15 h). The molar substitution (MS) of the product was characterized by nuclear magnetic resonance spectroscopy, and the maximum MS is 0.49. NMR analysis results show that the glucose units is grafted onto the galactose units of the guar gum main chains, and the linkage is mainly 1,6 -linkage. © 2020, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：21 / 28
页数：7
相关论文
共 17 条
  • [1] Stern R, Jedrzejas M J., Carbohydrate polymers at the center of life's origins: the importance of molecular processivity, Chemical Reviews, 108, pp. 5061-5085, (2008)
  • [2] Xiao R Q, Grinstaff M W., Chemical synthesis of polysaccharides and polysaccharide mimetics, Progress in Polymer Science, 74, pp. 78-116, (2017)
  • [3] Peat S, Whelan W J, Rees W R., 10. The enzymic synthesis and degradation of starch. Part XX. The disproportionating enzyme (D-enzyme) of the potato, Jorunal of Chemical Socity, 1956, pp. 714-722, (1956)
  • [4] Li L, Franckowiak E A, Xu Y, Et al., Efficient synthesis of β-(1, 6)-linked oligosaccharides through microwave-assisted glycosylation, Journal of Polymer Science Part A: Polymer Chemistry, 51, pp. 3693-3699, (2013)
  • [5] Uryu T, Schuerch C., Preparation of high molecular weight 2, 3, 4-tri-O-benzyl-[1→ 6]-α-d-gluco-and-galactopyranan and [1→ 6]-α-d-glucopyranan, Macromolecules, 4, pp. 342-345, (1971)
  • [6] Uryu T, Hatanaka K, Yoshinari K, Et al., Syntheses of 1, 6- anhydro-2, 3, 4-tri-0-benzyl-β-D-altropyranose and of 1, 6-anhydro-2-0-benzyl-3, 4-0-isopropylidene-β-D-galactopyranose and their ring-opening copolymerizations with 1, 6-anhydro-2, 3, 4-tri-0-benzyl (or p-methylbenzyl)-β-D-glucopyranose, Journal of Polymer Science: Polymer Chemistry Edition, 20, pp. 343-360, (1982)
  • [7] Kanazawa A, Suzuki M., Solid-state polycondensation of natural aldopentoses and 6-deoxyaldohexoses. Facile preparation of highly branched polysaccharide, Polymer, 47, pp. 176-183, (2006)
  • [8] Kanazawa A, Namiki S, Suzuki M., Thermal polycondensation of sugar fluoride to form highly branched polysaccharide, Journal of Polymer Science Part A: Polymer Chemistry, 45, pp. 3851-3860, (2007)
  • [9] Wang H, Shi Y, Le G., Rapid microwave-assisted synthesis of polydextrose and identification of structure and function, Carbohydrate Polymers, 113, pp. 225-230, (2014)
  • [10] Wang H, Cheng X, Shi Y, Et al., Preparation and structural characterization of poly-mannose synthesized by phosphoric acid catalyzation under microwave irradiation, Carbohydrate Polymers, 121, pp. 355-361, (2015)
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