Synthesis and characterization of hydrophobically modified polyacrylamides and some observations on rheological properties

2004 ◽  
Vol 40 (1) ◽  
pp. 47-56 ◽  
Author(s):  
Wei Xue ◽  
Ian W Hamley ◽  
Valeria Castelletto ◽  
Peter D Olmsted
Keyword(s):  
Rheological Properties ◽  
Synthesis And Characterization ◽  
Hydrophobically Modified

Synthesis and Characterization of a Hydrophobically Modified Copolymer ofN-Isopropylacrylamide and Glycinyl Acrylamide

1998 ◽  
Vol 31 (20) ◽  
pp. 7099-7102 ◽  
Author(s):  
Megan Spafford ◽  
Alla Polozova ◽  
Françoise M. Winnik
Keyword(s):  
Synthesis And Characterization ◽  
Hydrophobically Modified

Hydrophobically modified polyelectrolytes II: synthesis and characterization of poly(acrylic acid-co-alkyl acrylate)

2001 ◽  
Vol 12 (11-12) ◽  
pp. 616-625 ◽  
Author(s):  
Dong-qing Zhuang ◽  
Jie Chen Ai-hua Da ◽  
Yun-xiang Zhang ◽  
Reinhold Dieing ◽  
Lian Ma ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Synthesis And Characterization ◽  
Hydrophobically Modified ◽  
Alkyl Acrylate ◽  
Poly Acrylic Acid

Synthesis and characterization of carboxymethyl guar gum and rheological properties of its solutions

2012 ◽  
Vol 88 (3) ◽  
pp. 1015-1022 ◽  
Author(s):  
Honghong Gong ◽  
Mingzhu Liu ◽  
Jiucun Chen ◽  
Fei Han ◽  
Chunmei Gao ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Guar Gum ◽  
Synthesis And Characterization

scholarly journals Synthesis and characterization of hydrophobically modified polymeric betaines

2015 ◽  
pp. 10-20 ◽  
Author(s):  
Alexey Shakhvorostov ◽  
Zhanar Nurakhmetova ◽  
Gulnur Tatykhanova ◽  
Nurxat Nuraje ◽  
Sarkyt Kudaibergenov
Keyword(s):  
Synthesis And Characterization ◽  
Hydrophobically Modified

scholarly journals Synthesis and characterization of a cysteine xyloglucan conjugate as mucoadhesive polymer

2013 ◽  
Vol 49 (2) ◽  
pp. 285-292 ◽  
Author(s):  
Mangesh Bhalekar ◽  
Savita Sonawane ◽  
Shamkant Shimpi
Keyword(s):  
Rheological Properties ◽  
Covalent Attachment ◽  
Synthesis And Characterization ◽  
Thiol Groups ◽  
Chemically Modified ◽  
Mucoadhesive Polymer ◽  
Disulphide Bonds ◽  
Group Content

The aim of this study was to improve the mucoadhesive potential of xyloglucan polymer by the covalent attachment of cysteine as thiol moiety. The parent polymer xyloglucan was chemically modified by introducing sulphydryl bearing compound L-cysteine HCl. Different batches of xyloglucan-cysteine conjugates were prepared at varying reaction pH (2-6) and evaluated for optimum thiol incorporation, disulphide group content, swelling behavior, rheological properties and mucoadhesive properties. The obtained conjugates characterized in vitro by quantification of immobilized thiol groups; showed maximum thiol incorporation on xyloglucan (7.67 ± 0.14 %) at pH 5. The disulphide group content was found maximum (2.83 ± 0.12) at pH 6. The water uptake at end of 4 h was 5.0 for xyloglucan and was found to decrease in thiolated derivatives with increase in thiolation. Mucoadhesion studies revealed that mucoadhesion of xyloglucan-cysteine conjugate increased more than twice compared to the unmodified polymer. The viscosity of thiomer was more than that of xyloglucan because of formation of disulphide bonds.

Sign in / Sign up

Export Citation Format

Share Document