Results 21 to 30 of about 6,244 (251)

Synthesis and Characterization of Biopolyol-Based Waterborne Polyurethane Modified through Complexation with Chitosan

open access: yesNanomaterials, 2022
In this study, a series of castor oil-based anionic waterborne polyurethane (CWPU) systems, which it has been suggested may be suitable for use as green elastomers with diverse applications in films and coatings, was prepared by modified with O ...
Soon-Mo Choi, Sunhee Lee, Eun-Joo Shin
doaj   +1 more source

Pengaruh pemlastis nabati terhadap sifat elastomer termoplastik berbasis campuran karet alam/poli propilena

open access: yesMajalah Kulit, Karet, dan Plastik, 2015
Vegetable plasticizer is a plasticizer that is derived from renewable raw materials, that are used as an alternative to petroleum-based plasticizer. The purpose of this research was to compare the effect of the vegetable and plasticizer with petroleum ...
Dwi Wahini Nurhajati   +2 more
doaj   +1 more source

Interpenetrating Polymer Networks Based on Modified Castor Oil Urethane and Poly(methyl methacrylate) [PDF]

open access: yesPolymer Journal, 1998
Castor oil was initially subjected to an interesterification reaction with linseed and tung oils and the resulting intermediate was used for the preparation of polyurethanes and their IPNs with poly(methyl methacrylate). They were characterized for their physico-mechanical, swelling, and thermal properties.
Athawale, Vilas, Kolekar, Suresh
openaire   +1 more source

Investigation of wetting and hydrophobic properties of bitumen modified with different vegetable oils

open access: yesJournal of Innovative Transportation, 2021
In this study, the effects of oils obtained from vegetable products on the physical, mechanical and hydrophobic properties of bitumen were investigated. Within the scope of the study, six different vegetable oils were used for bitumen modification: hemp ...
Sercan Serin, Sümeyye Elif Demirezer
doaj   +1 more source

Low-modulus PMMA bone cement modified with castor oil

open access: yesBio-Medical Materials and Engineering, 2011
Some of the current clinical and biomechanical data suggest that vertebroplasty causes the development of adjacent vertebral fractures shortly after augmentation. These findings have been attributed to high injection volumes as well as high Young's moduli of PMMA bone cements compared to that of the osteoporotic cancellous bone.
López, Alejandro   +5 more
openaire   +4 more sources

Determinación de la densidad de entrecruzamiento de poliuretanos obtenidos a partir de aceite de ricino modificado por transesterificación Determination of crosslink density of polyurethanes obtained from castor oil modified by transesterification

open access: yesPolímeros, 2009
Se obtuvo una gama de polioles a partir del aceite de ricino modificado por transesterificación con pentaeritriol y glicerina. Los productos resultantes fueron caracterizados físico-químicamente. Se sintetizaron elastómeros de poliuretano a partir de los
Manuel F. Valero   +3 more
doaj   +1 more source

Mercerization effect on the properties of LDPE/PHB composites reinforced with castor cake [PDF]

open access: yesPolímeros, 2021
The aim of this work was to investigate the effects of mercerization on the structure of castor oil cake (CC) and on the tensile properties of LDPE/PHB/CC composites.
Marisa Cristina Guimarães Rocha   +4 more
doaj   +1 more source

Synthesis and characterization of interpenetrating polymer networks from transesterified castor oil based polyurethane and polystyrene

open access: yesJournal of Saudi Chemical Society, 2013
A series of two component interpenetrating polymer networks (IPN) of modified castor oil based polyurethane (PU) and polystyrene (PS) were prepared by the sequential method.
Vivek J. Dave, Hasmukh S. Patel
doaj   +1 more source

Biomaterial based novel polyurethane adhesives for wood to wood and metal to metal bonding

open access: yesMaterials Research, 2009
Polyurethane adhesives made from synthetic chemicals are non-biodegradable, costly and difficult to find raw materials from local market. To avoid solid pollution problem, cost effectiveness and easy availability of raw materials, biomaterials based ...
Mitesh Ramanlal Patel   +3 more
doaj   +1 more source

Acid Modified Jourdiqua Clay for Methanolysis of Castor Oil

open access: yesJournal of Pharmacovigilance, 2017
Clay and clay minerals have very promising future in catalysis of chemical reactions. In this work Jourdiqua clay from north of Sudan was acid modified and used as heterogeneous catalyst in transesterification reaction of castor oil with methanol. The clay was modified with hydrochloric acid, HCl. at 30%, 40%, 50%, 60% and 70% weight concentration with
Abdul Rahim Yacob   +4 more
openaire   +1 more source

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