Photo‐cured organic–inorganic hybrid composites of acrylated castor oil and methacrylate‐substituted polysilsesquioxane

Abstract

Acrylated castor oil (ACO) was synthesized by the reaction of castor oil and acryloyl chloride in the presence of triethylamine. The 1 H-NMR and Fourier transform infrared spectral analyses of ACO showed that the hydroxy groups of castor oil are completely esterified and that the number of acrylate groups per triglyceride is 2.56. The ACO was photo-cured with methacrylate-substituted polysilsesquioxane (ME-PSQ) prepared from 3-(trimethoxysilyl)propyl methacrylate and tetramethylammonium hydroxide in the ACO/ME-PSQ weight ratio of 20/0, 20/1, 20/2, and 20/3. Although the mechanical reinforcement effect by the incorporation of PSQ frameworks was observed when eval-uated from dynamic mechanical analysis and flexural test, the reinforcement effect showed a tendency to decline with a higher ME-PSQ content. The TEM observation revealed that the PSQ is homogeneously distributed in the matrix for the cured ACO/ME-PSQ (20/1), while some aggregated particles of the PSQ were observed for the cured AC/ME-PSQ (20/2). The 5% weight loss temperature of the cured ACO/ME-PSQ rose with ME-PSQ content. V C 2012 Wiley Periodicals, Inc. J Appl Polym Sci 126: E12-E20, 2012

Preparation of toughened polypropylene‐g‐poly(butyl acrylate‐co‐acrylated castor oil) by suspension grafting polymerization

“…FI‐IR spectrum of ACO showed the stretching vibration absorption peaks of acrylate ester CO at 1,743, 1,723 cm −1 and stretching absorption peak of the vinyl attached to carbonyl group at 1,637 cm −1 . 1 H‐NMR and FT‐IR results are similar to those reported by Shibata et al .…”

“…The number of acrylate groups was about 2.56 per ACO molecule. In this article, ACO was prepared by the reaction of castor oil with acryloyl chloride similar with the reference . ACO as a crosslinking monomer in the grafting reaction could form crosslinked copolymer with BA.…”

Supramolecular composites of photo‐cured acrylated castor oil and fibers formed by the self‐assembly of low molecular weight organic gelators

“…The cACO/CIA composites showed higher flexural modulus and strength than cACO/HSA composites did, suggesting that the matrix polymer is reinforced with the homogeneously distributed supramolecular fibrous network of CIA in case of cACO/CIA composites. When compared with the flexural strength and modulus (2.5 MPa, 40.8 MPa) of our previously reported cACO/ME‐PSQ 20/3 organic–inorganic hybrid composite [19], cACO/CIA 20/3 supramolecular composite had much higher strength and modulus (5.7 MPa, 94.2 MPa).…”

Influence of injection of concentrated NOx into diesel engine intake on exhaust gas components and fuel consumption

“…ACO was synthesized as described in the literature, as is shown in Fig. 1 [19]. Soybean oil (SBO) was supplied from Wako Chemical Co. Ltd. (Tokyo, Japan).…”

“…In the past studies, CO has been widely used as a feedstock of thermosetting resins such as polyurethane and alkyd resin [8–18]. Recently, we have reported the synthesis of acrylated castor oil (ACO) by the reaction of CO and acryloyl chloride as a new photo‐curable bio‐based acryl resin and the properties of the organic–inorganic hybrid composite of photo‐cured ACO with methacrylate‐substituted polysilsesquioxane (ME‐PSQ) [19]. Regarding the CO‐based green composites, Mistri et al reported the green composites composed of maleated CO and jute fibers [20].…”