Preparation of positively charged nanofiltration membrane from 2-hydroxypropyltrimethyl ammonium chloride chitosan by 1,4-butanediyl diglycidyl ether cross-linking

2010 ◽  
pp. n/a-n/a ◽  
Author(s):  
Ruihua Huang ◽  
Guohua Chen ◽  
Bingchao Yang ◽  
Congjie Gao
Keyword(s):  
Ammonium Chloride ◽  
Diglycidyl Ether ◽  
Cross Linking ◽  
Nanofiltration Membrane ◽  
Positively Charged

Positively-charged nanofiltration membrane formed by quaternization and cross-linking of blend PVC/P(DMA-co-MMA) precursors

2015 ◽  
Vol 492 ◽  
pp. 187-196 ◽  
Author(s):  
Yue Cui ◽  
Zhi-Kan Yao ◽  
Ke Zheng ◽  
Shi-Yuan Du ◽  
Bao-Ku Zhu ◽  
...  
Keyword(s):  
Cross Linking ◽  
Nanofiltration Membrane ◽  
Positively Charged

scholarly journals Toward Physicochemical and Rheological Characterization of Different Injectable Hyaluronic Acid Dermal Fillers Cross-Linked with Polyethylene Glycol Diglycidyl Ether

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 948
Author(s):  
Nicola Zerbinati ◽  
Sabrina Sommatis ◽  
Cristina Maccario ◽  
Maria Chiara Capillo ◽  
Giulia Grimaldi ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
Polyethylene Glycol ◽  
Biological Activities ◽  
Diglycidyl Ether ◽  
Dermal Filler ◽  
Cross Linking ◽  
Matrix Structure ◽  
Dermal Fillers ◽  
Rheological Characterization

(1) Background: Injectable hyaluronic acid (HA) dermal fillers are used to restore volume, hydration and skin tone in aesthetic medicine. HA fillers differ from each other due to their cross-linking technologies, with the aim to increase mechanical and biological activities. One of the most recent and promising cross-linkers is polyethylene glycol diglycidyl ether (PEGDE), used by the company Matex Lab S.p.A., (Brindisi, Italy) to create the HA dermal filler PEGDE family. Over the last few years, several studies have been performed to investigate the biocompatibility and biodegradability of these formulations, but little information is available regarding their matrix structure, rheological and physicochemical properties related to their cross-linking technologies, the HA content or the degree of cross-linking. (2) Methods: Seven different injectable HA hydrogels were subjected to optical microscopic examination, cohesivity evaluation and rheological characterization in order to investigate their behavior. (3) Results: The analyzed cross-linked dermal fillers showed a fibrous “spiderweb-like” matrix structure, with each medical device presenting different and peculiar rheological features. Except for HA non cross-linked hydrogel 18 mg/mL, all showed an elastic and cohesive profile. (4) Conclusions: The comparative analysis with other literature works makes a preliminary characterization of these injectable medical devices possible.

Novel Positively Charged Metal-Coordinated Nanofiltration Membrane for Lithium Recovery

2021 ◽  
Author(s):  
Li Wang ◽  
Danyal Rehman ◽  
Peng-Fei Sun ◽  
Akshay Deshmukh ◽  
Liyuan Zhang ◽  
...  
Keyword(s):  
Nanofiltration Membrane ◽  
Positively Charged

Multilayer composite beads constructed via layer-by-layer self-assembly for lysozyme controlled release

RSC Advances ◽  
2014 ◽  
Vol 4 (46) ◽  
pp. 24369-24376 ◽  
Author(s):  
Jiemin Zhao ◽  
Xiaoping Wang ◽  
Yanshen Kuang ◽  
Yufeng Zhang ◽  
Xiaowen Shi ◽  
...  
Keyword(s):  
Controlled Release ◽  
Self Assembly ◽  
Cross Linking ◽  
Layer By Layer ◽  
Multilayer Composite ◽  
Composite Beads ◽  
Assembly Technique ◽  
Positively Charged

Alginate (ALG)–lysozyme (LZ) beads were fabricated by a cross-linking process. Negatively charged ALG and positively charged LZ were alternately deposited on the positively charged ALG–LZ beads via a layer-by-layer (LBL) self-assembly technique.

A Cross-Linking Modification toward a High-Performance Polyimide Nanofiltration Membrane for Efficient Desalination

2021 ◽  
Author(s):  
Wenzhong Ma ◽  
Xinlei Dai ◽  
Pei Qiu ◽  
Hanwen Ye ◽  
Jing Zhong ◽  
...  
Keyword(s):  
High Performance ◽  
Cross Linking ◽  
Nanofiltration Membrane
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