A new UV‐curable biodegradable waterborne polyurethane‐acrylate based on natural rubber blended with cassava starch

An ecofriendly UV‐curable biodegradable waterborne polyurethane acrylate (WPUA) was synthesized using hydroxy telechelic natural rubber (HTNR), gelatinized cassava starch (GCS) hexamethylene diisocyanate, hydroxymethyl propionic acid and 2‐hydroxyethyl acrylate and Darocur 1173 (photo‐initiator) for...

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Published in:Journal of applied polymer science 2023-05, Vol.140 (17), p.n/a
Main Authors: Tsupphayakorn‐aek, Phanthanyaphon, Suwan, Anutida, Chaisit, Thawanrat, Tulyapitak, Tulyapong, Phinyocheep, Pranee, Pilard, Jean‐Francois, Saetung, Nitinart, Saetung, Anuwat
Format: Article
Language:English
Subjects:
Aging (natural)
Biodegradability
biodegradable
Cassava
Disintegration
Free energy
gelatinized cassava starch
Gloss
Hexamethylene diisocyanate
Hydroxyethyl acrylate
Materials science
Miscibility
Natural rubber
Photomicrographs
Photosensitivity
Polymers
Polyurethane resins
Propionic acid
Storage stability
Tensile strength
Thermal degradation
UV‐cured
waterborne polyurethane‐acrylate
Weathering
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cited_by cdi_FETCH-LOGICAL-c2977-996699380848bd8c6d880706047bf1ff1b74226dc361cf3407f5bfe3fb901dce3
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creator Tsupphayakorn‐aek, Phanthanyaphon
Suwan, Anutida
Chaisit, Thawanrat
Tulyapitak, Tulyapong
Phinyocheep, Pranee
Pilard, Jean‐Francois
Saetung, Nitinart
Saetung, Anuwat
description An ecofriendly UV‐curable biodegradable waterborne polyurethane acrylate (WPUA) was synthesized using hydroxy telechelic natural rubber (HTNR), gelatinized cassava starch (GCS) hexamethylene diisocyanate, hydroxymethyl propionic acid and 2‐hydroxyethyl acrylate and Darocur 1173 (photo‐initiator) for coating, adhesive applications, and so forth. WPUA thus prepared with a total solid content of about 20% had a good storage stability with a pot‐life of 3 months. The UV‐curable WPUA/GCS films showed superior photosensitivity with an irradiation time of 60 s. With increasing GCS content of the WPUA/GCS films, its transparency increased and surface gloss decreased. Scanning electron microscopic micrographs indicated good miscibility with strong interactions between WPUA and GSC in the matrix leading to high tensile strength and surface free energy with enhanced thermal degradation. Increasing the GCS content up to 75 wt% in the film accelerated its degradation under weathering aging, and showed complete disintegration in soil after 7 days. This work provided a new environmentally friendly pathway to prepare WPUA based on HTNR and GCS with good biodegradability.
doi_str_mv 10.1002/app.53787
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subjects Aging (natural)
Biodegradability
biodegradable
Cassava
Disintegration
Free energy
gelatinized cassava starch
Gloss
Hexamethylene diisocyanate
Hydroxyethyl acrylate
Materials science
Miscibility
Natural rubber
Photomicrographs
Photosensitivity
Polymers
Polyurethane resins
Propionic acid
Storage stability
Tensile strength
Thermal degradation
UV‐cured
waterborne polyurethane‐acrylate
Weathering
title A new UV‐curable biodegradable waterborne polyurethane‐acrylate based on natural rubber blended with cassava starch
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