Results 61 to 70 of about 3,346 (221)

Bio‐Based Polyurethanes for Sustainable and Multifunctional Applications

Advanced Science, EarlyView.
Bio‐based polyurethanes prepared from vegetable oils, lignin, and polysaccharides have attracted increasing interest as alternatives to fossil‐derived polyurethanes. This review summarizes recent progress in their chemistry, structural engineering, and advanced applications, highlighting the roles of feedstocks, chain‐segment design, dynamic covalent ...
Xin Li, Henghui Deng, Shiwei Yu, Jiawei Huang, Zehong Chen, Dawei Zhao, Chaoqun Zhang   +6 more
wiley   +1 more source

Synthesis and Characterization of Graft Copolymer Rice Straw Cellulose-Acrylamide Hydrogels Using Gamma Irradiation

Atom Indonesia, 2013
Rice straw cellulose available as waste biomass was graft copolymerized with acrylamide monomer by simultaneous gamma irradiation as initiator. The effects of bleaching of cellulose and irradiation dose were evaluated.
D. Swantomo, Rochmadi, K.T. Basuki, R. Sudiyo   +3 more
doaj  

Beyond PEG: Emerging Polymer Lipid Alternatives for Lipid Nanoparticle (LNP) Formulations

Advanced Science, EarlyView.
This review discusses recent advances in PEG‐alternative LNP designs, including non‐PEG polymers, zwitterionic lipids, and polypeptides. It evaluates how surface‐engineering chemistry influences LNP formation and biological behavior, and highlights current limitations and opportunities of PEG‐alternative LNPs.
Zihnil A. I. Mazrad, Yi Ju, Stephen J. Kent, Colin W. Pouton, Kristian Kempe   +4 more
wiley   +1 more source

Synthesis and Characterization of Konjac Glucomannan-Graft-Polyacrylamide via γ-Irradiation

Molecules, 2008
The synthesis of konjac glucomannan-graft-polyacrylamide (KGM-g-PAM) wascarried out at 25°C by γ-irradiation under a N2 atmosphere. The effects of absorbedradiation dosage and monomer concentration on grafting yield and water absorbency werestudied.
Jie Pang, Yudong Shen, Yuanming Sun, Yueming Jiang, Youhui Yang, Zhenlin Xu   +5 more
doaj   +1 more source

New Grafted Copolymers Carrying Betaine Units Based on Gellan and N-Vinylimidazole as Precursors for Design of Drug Delivery Systems

Molecules, 2020
New grafted copolymers possessing structural units of 1-vinyl-3-(1-carboxymethyl) imidazolium betaine were obtained by graft copolymerization of N-vinylimidazole onto gellan gum followed by the polymer-analogous reactions on grafted polymer with the ...
Stefania Racovita, Nicolae Baranov, Ana Maria Macsim, Catalina Lionte, Corina Cheptea, Valeriu Sunel, Marcel Popa, Silvia Vasiliu, Jacques Desbrieres   +8 more
doaj   +1 more source

Polymer Sequence Design of Zwitterionic Polymer/PEDOT:PSS Blend Films for Improved Charge Transport and Stability in Organic Electrochemical Transistors

Advanced Electronic Materials, EarlyView.
Solution blending of zwitterionic polymers with PEDOT:PSS provides a simple route to OECT materials with enhanced threshold voltage stability in biologically relevant environments. The polymer sequence alters outer‐domain structure within the preserved PEDOT:PSS framework, thereby tuning charge transport.
Wakana Takahashi, Aki Kashiwazaki, Masaya Mitsuishi, Shunsuke Yamamoto   +3 more
wiley   +1 more source

Potency of (Poly) Acrylic/Carboxymethyl Starch-Chitosan Biohydrogel for Curcumin Oral Delivery Matrix

Pharmaceutical Sciences and Research, 2018
Biohydrogel has gathered great interest in the pharmaceuticals field. This natural polymers were biodegradable, non-toxic, biocompatible, and its specific ability to response environment change can be considered for the controlled released matric of ...
Eka Ruriani , Djumali Mangunwidjaja, Nur Richana, Titi Candra Sunarti   +3 more
doaj  

Preparation of Graphene-Polyaniline-Cellulose Double Network Hydrogels Using One Pot Method by Gamma Irradiation with Electrochemical Properties

Indonesian Journal of Chemistry, 2018
In order to achieve high performance of electrochemical properties, numerous efforts have been devoted to the development of advanced multi-component hybrid double network hydrogel materials.
Deni Swantomo, Kris Tri Basuki, Sigit Sigit, Yadi Yunus   +3 more
doaj   +1 more source

Ultrasonic-Assisted Synthesis and Characterization of Chitosan-Graft-Substituted Polyanilines: Promise Bio-Based Nanoparticles for Dye Removal and Bacterial Disinfection

Journal of Chemistry, 2020
The sonication-mediated oxidative-radical copolymerization using ammonium persulfate in acidic medium provides a new successful avenue to graft Chitosan with three methylaniline derivatives.
Mutairah Shaker Alshammari, Amr A. Essawy, A. M. El-Nggar, S. M. Sayyah   +3 more
doaj   +1 more source

Synthesis of functionalized polyolefins in a new continuous bench‐scale reactor apparatus

AIChE Journal, EarlyView.
Abstract In‐reactor functionalized polyolefins (FPOs), produced by molecular catalysts, are a new class of polymer materials with applications ranging from high performance adhesives to bitumen compatibilization. In this work, we disclose a procedure for the synthesis of FPOs in a new Continuous Bench‐scale Reactor Apparatus (COBRA).
Miloud Bouyahyi, Job Guzman, Travis Conant, Reggie Tennyson, Christoph Brose, Riccardo Conti, Peter Kolb, Andreas Müller   +7 more
wiley   +1 more source