Effect of Sulfation Route and Subsequent Oxidation on Derivatization Degree and Biocompatibility of Cellulose Sulfates.
Effect of Sulfation Route and Subsequent Oxidation on Derivatization Degree and Biocompatibility of Cellulose Sulfates.
复制标题
硫酸化路线和随后的氧化对硫酸纤维素衍生化程度和生物相容性的影响
DOI:
10.1002/mabi.201900403
复制
发表时间:
2019
影响因子:
4.6
通讯作者:
T. Groth
中科院分区:
文献类型:
--
作者:
J. Strätz;A. Liedmann;T. Heinze;S. Fischer;T. Groth
Sulfated cellulose (CS) represents an interesting biopolymer due to bioactivity comparable to heparin. However, use of CS for making surface coatings or hydrogels requires the presence of reactive groups for covalent reactions. Here, an approach is presented to oxidize cellulose sulfates for subsequent cross‐linking reactions with amino groups to form imine bonds. Cellulose is sulfated by direct sulfation or acetosulfation, followed by aMalaprade oxidation. The CS obtained is characterized by elemental analysis and13C‐NMR spectroscopy. The resulting oxidized cellulose sulfates (oxCS) have different degrees of sulfation ranging from 0.79 to 1.13 and oxidation degrees from 0.18 to 0.34, but also different mass average molecular mass (MW). Toxicity studies are carried out with mouse 3T3 fibroblasts exposed to aqueous solutions of oxCS. The results show that all oxCS are non‐toxic at lower concentrations (0.5 mg mL−1), but with both increasing degree of oxidation and concentrations, toxic effects are observed particularly for acetosulfated and lesser for direct sulfated oxCS, which is related to a decrease in theMWof the products. It is concluded that oxCS obtained by direct sulfation withMWabove 70 kDa may represent a biocompatible material for the applications suggested above.
登录
查看更多内容
影响因子:
4.6
作者:
Annett Weltrowski;Marie-Luise da Silva Almeida;D. Peschel;Kai Zhang;S. Fischer;T. Groth
通讯作者:
Annett Weltrowski;Marie-Luise da Silva Almeida;D. Peschel;Kai Zhang;S. Fischer;T. Groth
影响因子:
9.7
作者:
Peschel, D.;Zhang, K.;Groth, T.
通讯作者:
Groth, T.
影响因子:
5.7
作者:
J. Strätz;A. Liedmann;M.-L. Trutschel;K. Mäder;T. Groth;S. Fischer
通讯作者:
S. Fischer
DOI:
10.1080/19447025708660110
发表时间:
1957
期刊:
Journal of The Textile Institute Transactions
影响因子:
--
作者:
T. P. Nevell
通讯作者:
T. P. Nevell
影响因子:
11.2
作者:
N. Teramoto;Youhei Arai;Y. Shibasaki;M. Shibata
通讯作者:
M. Shibata