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Synthesis and Application of UV-curable Phosphorous-Containing Acrylated Epoxidized Soybean Oil-based Resins

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Journal of Bioresources and Bioproducts 2019年第3期4卷 49-57页

作者： Yun HU Puyou JIA Qianqian SHANG Meng ZHANG Guodong FENG Chengguo LIU Yonghong ZHOU Institute of Chemical Industry of Forest Products Chinese Academy of ForestryKey Lab of Biomass Energy and MaterialJiangsu ProvinceNational Engineering Lab for Biomass Chemical UtilizationKey Lab on Forest Chemical EngineeringState Forestry AdministrationNanjing 210042China Co-Innovationof Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing 210037China

A novel phosphorous-containing acrylated epoxidized soybean oil-based(P-AESO)resin was developed via the ring-opening reaction of epoxidized soybean oil(ESO)with diphenylphosphinic chloride(DPPC),followed by acrylation of the resulting groups.The chemical structure was characterized by Fourier transform infrared spectroscopy(FT-IR),and ^(1)H nuclear magnetic resonance(^(1)H NMR).Subsequently,the viscosity and volumetric shrinkage of the obtained P-AESO resins were studied.Then the oligomer was formulated into UV-curable coatings,and the mechanical,thermal,and coating properties of the resulting UV-cured bioresins were studied by tensile testing,dynamic mechanical thermal analysis(DMA),thermogravimetric analysis(TGA)coupled with FT-IR spectroscopy(TGA-FT-IR),hardness,adhesion,pencil hardness and chemical resistance.Furthermore,the UV-curing behavior of the P-AESO resin was determined by real-time realtime infrared(RT-IR).Meanwhile,compared with coating from acrylated epoxidized soybean oil(AESO),the P-AESO system coatings showed better volumetric shrinkage,excellent adhesion,and enhanced thermal and glass transition temperature(Tg)while maintaining reasonably final C=C conversions and cross-link density.For instance,the obtained P-AESO/trimethylolpropanetriacrylate(TMPTA)20 material possessed a volumetric shrinkage of 4.1%,Tg of 115.6℃,char yield of 9.47%,and final C=C conversions of 81.4%respectively,which exhibited superior values than that of the AESO/TMPTA20 material.The improvement of the P-AESO coating performances could contribute to the architectures that combined the structural features of phosphorous-containing rigid benzene.The developed P-AESO resin is promising for applications in the UV-curable coatings.

关键词： biobased UV-curable coatings acrylated epoxidized soybean oil diphenylphosphinic chloride

Estimating potential harvestable biomass for bioenergy from sustainably managed private native forests in Southeast Queensland, Australia

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Forest Ecosystems 2018年第1期5卷 62-76页

作者： michael r.ngugi victor j.neldner sean ryan tom lewis jiaorong li phillip norman michelle mogilski department of environment and sciencequeensland herbariumMt Coot-tha RoadToowongQld 4066Australia private forestry service queensland 8 Fraser RdGympieQld 4570Australa department of agriculture and fisheries university of sunshine coastSippy DownsQld 4556Australia department of environment and science soil and land resources41 Boggo RoadDutton ParkQld 4102Australia university of queensland St LuciaQld 4072Australia

Background： Australia＇s energy future is at the crossroads and the role of renewable sources is in focus. Biomass from sustainably managed forests provide a significant opportunity for electricity and heat generation and production of liquid fuels. Australia has extensive native forests of which a significant proportion are on private land. However, there is limited knowledge on the potential capacity of this resource to contribute to the expansion of a biomass for bioenergy industry. In addition, there are concerns on how to reconcile biomass harvesting with environmental protection. Methods： We used regional ecosystem vegetation mapping for Queensland to stratify harvestable forests within the 1.8 m hectares of private native forests present in the Southeast Queensland bioregion in 2014. We used a dataset of 52,620 individual tree measurements from 541 forest inventory plots collected over the last 10 years. Tree biomass was estimated using current biomass allometric equations for Australia. Biomass potentially available from selective sawlog harvesting and silvicultural treatment across the bioregion was calculated and mapped. Results： Current sawlog harvesting extracts 41.4% of the standing tree biomass and a biomass for bioenergy harvest would retain on average 36% of felled tree biomass on site for the protection of environmental and fauna habitat values. The estimated area extent of harvestable private native forests in the bioregion in 2013 was 888,000 ha and estimated available biomass for bioenergy in living trees was 13.6 million tonnes （t）. The spotted gum （Corymbio citriodora subsp, variegata） forests were the most extensive, covering an area of 379,823 ha and with a biomass for bioenergy yield of 14.2 t-ha-1 （with approximately 11.2 t.ha-1 of the biomass harvested from silvicultural thinning and 3 t.ha-1 recovered from sawlog harvest residual）. Conclusions： Silvicultural treatment of private native forests in the Southeast Queensland bioregion, has the capacity to supply a large quantity of biomass

关键词： Renewable energy Forest biomass Woody biomass Native forests Silvicultural management Biomassretention biobased

Hair Dyeing by Using Catechinone Obtained from (+)-Catechin

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Journal of Cosmetics, Dermatological Sciences and Applications 2012年第3期2卷 158-163页

作者： Yasunaga Hidekazu Takahashi Akiko Ito Kazue Ueda Masahisa Urakawa Hiroshi Department of biobased Materials Science Kyoto Institute of Technology Kyoto Japan Department of biobased Materials Science Kyoto Institute of Technology Kyoto Japan.

A novel colourant for hair dyeing was prepared by an enzymatic reaction with (+)-catechin and its characteristics as a hair dyestuff were studied. The study is aimed at inventing the hair dyestuff that is human- and eco-friendly. One potentially powerful dyestuff was obtained from (+)-catechin treated with tyrosinase after screening experiments using biobased materials. The obtained reddish orange colourant, 4-(3,4-dihydro-3α,5,7-trihydroxy-2H-1-benzopyran-2α-yl) 1,2-benzoquinone named “catechinone”, shows enough dyeability for decolourised white hair. Catechinone does not cause erythema or oedema on skin of rabbits. The colour is controlled by the addition of other biobased materials and a variety of colours of dyed hair are acquired. The fastness to light or washing for hair dyed by catechinone is high enough for practical use.

关键词： Hair Dyeing Catechinone Dyestuff (+)-Catechin biobased Materials Safer Human-Friendly

Sustainable Production of Surfactants from Renewable Resources

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粮油食品科技 2020年第5期28卷 41-48页

作者： Douglas G.Hayes Department of Biosystems Engineering and Soil Science University of TennesseeUSA KnoxvilleTennesse37996-4531USA

Surfactants are important chemical products,serving as emulsifiers and interfacial modifiers in the household detergents,personal care products,paints and coatings,foods,cosmetics,and pharmaceuticals industries.This review focuses upon recent advances in research and development to improve the ecological sustainability of surfactants throughout their life cycle,including derivation from renewable resources,production using green manufacturing principles,and improved biocompatibility and biodegradability during their consumer use and disposal stages.biobased surfactants,derived from vegetable oils,polysaccharides,proteins,phospholipids,and other renewable resources,currently comprise approximately 24%of the surfactant market,and this percentage is expected to increase,especially in Asia.The use of renewables is attractive to consumers because of reduced production of CO2,a greenhouse gas associated with climate change.Enzymes can greatly increase process sustainability,through reduced use of organic solvent,water,and energy,and reduced formation of by-products and waste products.Among the enzymes being investigated for surfactant synthesis,lipases are the most robust,due to their relatively high biocatalytic activity,operational stability and their ability to form or cleave ester,amide,and thioester bonds.For enzymes to be robust catalysts of surfactants,further research and development is needed to improve catalytic productivity,stability and reduce their purchase cost.

关键词： biobased enzymes green manufacturing surfactants sustainability renewable

Synthesis and Characterization of the Thermoelectric Nickel Tetrathiooxalate Polymer as Nanoparticles

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Journal of Materials Science and Chemical Engineering 2020年第4期8卷 1-12页

作者： Christophe Faulmann Benoî t Cormary Dominique de Caro Kane Jacob Lydie Valade Pascale de Caro CNRS LCC (Laboratoire de Chimie de Coordination) Toulouse France Université de Toulouse UPS INPT Toulouse France Laboratoire de Chimie Agro-Industrielle (LCA) Université de Toulouse INRA INPT Toulouse France

Nanoparticles of the conductive coordination polymer Ni(tto) have been synthesized under mild conditions in the presence of bio-based polyesters or polyethylene glycol acting as growth controlling agents. With polyesters, aggregates of particles are observed whereas well dispersed nanoparticles are obtained with polyethylene glycol. Indeed, for a Ni2+/polyethylene glycol weight ratio of 0.031, transmission electron micrographs evidence dispersed particles exhibiting sizes in the 3 - 10 nm range. Infrared spectra for nanopowders show two CS stretching modes in the 1100 - 1190 cm−1 range, confirming the presence of the tetrathiooxalate ligand coordinated to the nickel center. The room-temperature electrical conductivity for the nanopowder prepared in the presence of polyethylene glycol is about 0.8 S∙cm−1, a decent value for tetrathiolate-based polymers. Finally, magnetic susceptibility measurements for well-dispersed Ni(tto) particles evidence a Curie-Weiss law in a large temperature range. Moreover, low temperatures measurement would confirm intra- or interchain interactions between nickel atoms within the Ni(tto) polymer chains.

关键词： Conductive Coordination Polymers Tetrathiooxalate Polyethylene Glycol biobased Polyesters Nanoparticles