Results 71 to 80 of about 3,346 (221)

The Effect of Styrene Monomer in the Graft Copolymerization of Arcylonitrile onto Deproteinized Natural Rubber

open access: yesInternational Journal of Technology, 2015
Graft copolymerization of an acrylonitrile monomer onto Deproteinized Natural Rubber (DPNR) is an important process in the modification of Natural Rubber (NR) to increase its oil resistance.
Tuti Indah Sari   +4 more
doaj   +1 more source

Microwave-grafted Aegle marmelos gum – Carbopol hydrogel for efficient wound healing

open access: yesNext Materials
Natural polysaccharide-based hydrogels are increasingly recognized as sustainable, biocompatible, and functional biomaterials with applications in wound healing and drug delivery.
Dinanath Gaikwad   +4 more
doaj   +1 more source

POTENTIAL USE OF GRAFT COPOLYMERS OF MERCERIZED FLAX AS FILLER IN POLYSTYRENE COMPOSITE MATERIALS

open access: yesBioResources, 2008
Graft copolymerization of binary vinyl monomers onto mercerized flax fiber was carried out for the enhancement of mechanical properties of polystyrene composites. Binary vinyl monomer mixture of AA+AN has been found to show maximum grafting (33.55%) onto
Susheel Kalia   +4 more
doaj  

Graft-copolymerization of β-Propiolactone onto Polyacrylonitrile

open access: yesKobunshi Kagaku, 1965
少量のジケテンを主鎖に含有するポリアクリロニトリルの存在下でβ-プロピオラクトンをKOH, Me ONa, Bu Li, Sn Cl4, BF3O (Et) 2を触媒として重合させ, ポリアクリロニトリル中のラクトン環とβ-プロピオラクトンを共重合させることにより, ポリアクリロニトリルにβ-プロピオラクトンをグラフト重合させた。グラフト率は反応時間とともに増加するがグラフト効率は逆に低下する傾向が見られる。またDMF中溶液重合では塊状重合に比較して全重合速度は大きいがその割にグラフト率が小さい。重合温度が高いほどまた, 触媒濃度の高いほど全収率およびグラフト率は増加しているが, グラフト効率は逆に低下している。また幹ポリマー中のジケテン含有率が増加しても全収率は変化しないが ...
Shiota, Tetsuya   +4 more
openaire   +2 more sources

Chemical Surface Functionalization of Woven Kenaf Preforms Using Methyl Methacrylate and Methyl Acrylate Monomers

open access: yesUMYU Scientifica Journal
This study investigated the surface modification of woven kenaf preforms to overcome their inherent hydrophilicity and enhance their thermal and surface properties.
Mohammed J Bello   +4 more
doaj   +1 more source

Ultrafine fully vulcanized natural rubber modified by graft-copolymerization with styrene and acrylonitrile monomers. [PDF]

open access: yesBioresour Bioprocess, 2022
Longsiri K   +6 more
europepmc   +1 more source

The Jekyll and Hyde Nature of Tetrazoles in Polymer Science: From Intrinsic Electronic Duality to Programmable Macromolecular Function

open access: yesAngewandte Chemie International Edition, EarlyView.
Tetrazoles are reframed as substitution‐programmable heterocycles rather than static functional groups in polymer chemistry. By linking electronic identity to synthetic strategy and polymer architecture, this mini‐review establishes a design framework for translating tetrazole duality into predictable macromolecular function.
Meryem S. Akdemir, Hatice Mutlu
wiley   +1 more source

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