We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
New alternatives to single‐use plastics: Starch and chitosan‐graft‐polydimethylsiloxane‐coated paper for water‐ and oil‐resistant applications
AI summary Read the abstract
Researchers developed a fluorine-free, bio-based paper coating using starch and chitosan grafted with polydimethylsiloxane, achieving water- and oil-resistance comparable to conventional fluorochemical coatings while remaining biodegradable and compostable.
Abstract An increase in the environmental and health concerns over fluorochemical‐based, wax‐based, and extrusion‐based paper coatings has led to a growing interest in bio‐based, biodegradable, and repulpable alternatives to obtain water‐ and oil‐repellent coatings. Reported herein is a fluorine‐free, plastic‐free, and cost‐effective water and grease resistant paper coating approach that utilizes blends of corn‐starch (S) and a novel chitosan‐ graft ‐polydimethylsiloxane (CP) copolymer. The hydrophobic and oleophobic performance of the S/CP‐coated paper was evaluated by varying the ratio of S and CP in the overall blend. The S/CP‐coated papers were observed to have low cobb60 values (water absorptivity) of 13 ± 0.9 g m −2 and an excellent kit rating (oil resistance) of 12/12. The S/CP‐coated paper substrate surface profile was analyzed via scanning electron microscopy (SEM). The repulpability of the coated paper is also demonstrated by washing the coating materials from the paper and recovering the pulp.
More Papers Like This
Oil‐ and water‐resistant paper substrate using blends of chitosan‐graft‐polydimethylsiloxane and poly(vinyl alcohol)
AI summary Read the abstract
Researchers developed a plastic- and fluorine-free coating approach for oil and water repellent paper substrates using blends of poly(vinyl alcohol) and chitosan-graft-polydimethylsiloxane copolymer, offering an economical alternative to conventional coatings that contribute to microplastic contamination.
Chitosan–Graft–Poly(dimethylsiloxane)/Zein Coatings for the Fabrication of Environmentally Friendly Oil- and Water-Resistant Paper
AI summary Read the abstract
Researchers developed a sustainable paper coating using chitosan-graft-poly(dimethylsiloxane) and zein biopolymers that provides oil and water resistance, offering a biodegradable alternative to conventional synthetic polymer coatings that contribute to microplastic pollution. The approach demonstrates a practical strategy for reducing plastic waste in paper packaging applications.
Fabrication of oil‐ and water‐resistant paper without creating microplastics on disposal
AI summary Read the abstract
Researchers developed a plastic-free, biodegradable paper coating made from chitosan and sunflower oil that provides oil and water resistance. Unlike conventional coatings, this material does not shed microplastics when disposed of, offering a promising sustainable alternative for food packaging.
Bio-Based Monoepoxy-TerminatedPolysiloxane-ModifiedCoating for Hydrophobic and Oil-Resistant Paper
AI summary Read the abstract
Researchers developed a bio-based coating material by grafting monoepoxy-terminated polysiloxane onto chitosan and cellulose nanofibers via a one-pot method, producing films with tunable hydrophobic and oil-resistant properties for sustainable packaging paper as an alternative to nondegradable plastic coatings.
Fabrication of water/oil-resistant paper by nanocellulose stabilized Pickering emulsion and chitosan
AI summary Read the abstract
Researchers developed a plastic-free, biodegradable water- and oil-resistant paper coating using cellulose nanofibrils and chitosan in a Pickering emulsion system. The coating provided excellent barrier properties against water and oil while maintaining paper recyclability and compostability. The study offers a promising alternative to conventional plastic-based food packaging coatings that contribute to microplastic pollution.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.