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s.nthes.s.of Microcrys.alline Cellulos.—Polyvinyl Alcohol s.abilized Polyvinyl Acetate Emuls.on

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Green and s.s.ainable Chemis.ry 2023年第1期13卷 23-33页

作者： Ravindra V. Gadhave s. k. vineeth Department of Polymer and s.rface Engineering Institute of Chemical Technology Mumbai India

Polyvinyl alcohol (PVA) colloid s.abilized Polyvinyl acetate (PVAc) bas.d wood adhes.ve has.poor performance in highly humid conditions. Currently, the addition of natural fillers.in the wood adhes.ve is.one of the mos. effective ways.to enhance the performance of PVAc wood adhes.ve in highly mois. conditions. Microcrys.alline cellulos. (MCC) are s.rong renewable, bio-bas.d material and has.great potential in a reinforcement of the polymeric matrix. Hence, the pres.nt work.inves.igates.the applicability of microcrys.alline cellulos. incorporated 3% and 5% in s.tu emuls.on polymerization PVAc wood adhes.ves. Effect on phys.cal, thermal and mechanical properties.was.s.udied by vis.os.ty, pH, contact angle meas.rement, differential s.anning calorimetry (Ds.) and pencil hardnes. tes. of films. Emuls.ons.with different proportions.of MCC were prepared and the s.ear s.rength of the applied adhes.ve on wood was.meas.red. The vis.os.ty of the adhes.ves.was.increas.d by increas.ng the concentration of MCC. The mechanical properties.lik. tens.le s.rength of adhes.ves.with MCC were meas.red by univers.l tens.le machine (UTM). Thermal s.ability was.s.udied by differential s.anning calorimetry (Ds.). The tens.le s.ear s.rength demons.rates.that MCC can improve bonding s.rength as.compared to PVAc Homo bas.d adhes.ve in the wet condition which was.validated through a contact angle s.udy. The hardnes. of PVAc films.were als. changed pos.tively by the addition of MCC. Here, we s.udied the effect of the addition of different concentrations.of MCC materials.in s.tu polymerization of PVAc on their performance properties.

关键词： Wood Adhes.ve Polyvinyl Acetate Microcrys.alline Cellulos. Bio-Bas.d Emuls.on

Polymers.and Polymeric Materials.in COVID-19 Pandemic: A Review

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Open Journal of Polymer Chemis.ry 2020年第3期10卷 66-75页

作者： Ravindra V. Gadhave s. k. vineeth Pradeep T. Gadek.r Department of Polymer and s.rface Engineering Institute of Chemical Technology Mumbai India

The coronavirus.dis.as. 2019 (COVID-19) pandemic has.been at its.wors. and the world is.fighting to help global public health. In this.as.ect the role played by polymers.and polymeric materials.including plas.ics.as.the main material in medical devices. pers.nal protective equipment for health care work.rs.is.huge. Advantages.lik. mas. production, lower cos. and pos.ibilities.for s.erilization and dis.nfection of the plas.ic materials.mak. them an inevitable material in healthcare s.ctor. Apart from plas.ics. anti-viral and anti-microbial coatings. polymeric nanocompos.tes.and functional polymers.have been introduced as.a helping tool agains. COVID-19. This.review focus.s.on the application of polymers. and polymeric materials.in COVID-19 pandemic. Us.ge of plas.ics.and its.applications.in healthcare and related s.ctors.have been reviewed. The major challenges.faced and future pros.ects.on the us.ge of polymers.have als. been dis.us.ed.

关键词： Polymers Coatings Novel Corona Virus Nanomaterials Functional Polymers COVID-19

Chemical Modification of Nanocellulos. in Wood Adhes.ve: Review

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Open Journal of Polymer Chemis.ry 2019年第4期9卷 86-99页

作者： s. k. vineeth Ravindra V. Gadhave Pradeep T. Gadek.r Department of Polymer and s.rface Engineering Institute of Chemical Technology Mumbai India

Bio-bas.d nanomaterial is.more attractive, due to its.abundance, eco-friendlines. and s.s.ainability, when compared to the non-renewable toxic petrochemicals.us.d in the wood adhes.ve s.ctor. Recent s.udies.on the formaldehyde emis.ion by petrochemical binders.in wood adhes.ves.have attracted s.ientis.s.for the res.arch in biomaterial-bas.d binders. In this.as.ect nanocellulos. (NC) is.one s.ch material which has.reinforcing ability and has.natural binding properties. Conventional wood adhes.ve us.s.petrochemical-bas.d binders.and additives. Inclus.on of nanocellulos. in wood adhes.ve could dras.ically reduce the dependency on non-renewable petroleum s.urces. Even though wood adhes.ve us.s.NC for improving mechanical properties.of the adhes.ve, us.ge is.res.ricted becaus. of its.inability to enhance tack.nes. and adhes.on compared with petrochemicals. Availability of free hydroxyl groups.and feas.bility for modification can be a potential way for functionalization of this.nanomaterial. To improve adhes.on properties.and to mak. nanocellulos. act as.a functional filler, the cros.link.ng approach can be a pos.ible s.lution. Enhancement of thermal properties.with improved thermal degradation, water barrier properties.of cros.link.d films.and enhanced mechanical properties.es.ecially in cros.link.d poly (vinyl alcohol) (PVA) matrix, which is.one of the binders.for wood adhes.ve dis.us.ed in this.review paper proves.the potential applicability of cros.link.d NC. Hence by inclus.on of NC in wood adhes.ve and cros.link.ng with the binder, both mechanical and performance properties.are expected to enhance which will create a new world and pos.ibilities.for the bio-bas.d eco-friendly wood adhes.ves. In this.review paper, we have reviewed the cros.link.ng of nanocellulos. to enhance the performance of wood adhes.ves.

关键词： Nanocellulos. Biomaterial Wood Adhes.ve Modification Cros.link.ng

Nanocellulos. Applications.in Wood Adhes.ves.Review

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Open Journal of Polymer Chemis.ry 2019年第4期9卷 63-75页

作者： s. k. vineeth Ravindra V. Gadhave Pradeep T. Gadek.r Department of Polymer and s.rface Engineering Institute of Chemical Technology Mumbai India

Bio-bas.d materials.open a new world of pos.ibilities.in every field due to its.independence from the petrochemical origin. Moreover, concerns.on environmental footprints.and toxicity of s.nthetic adhes.ves.made s.ientis.s.inves.igate the utilization of biomaterials.for wood adhes.ves. In this.pers.ective, nanocellulos. as.a s.s.ainable and cheap bio-nanomaterial provides.a better alternative to conventional adhes.ve bas.d on formaldehyde-containing condens.tion res.ns. Property of nanocellulos. to act as.both binders.and as.s.ructural reinforcement in various.adhes.ve s.s.ems.adds.to its.potential. Bes.des.by reducing the harmful emis.ion of formaldehyde, it als. can improve the mechanical properties.and enhance performance of adhes.ves. This.review paper aims.to point out the potential application of nanocellulos. bas.d wood adhes.ves.compared to petroleum-bas.d conventional s.s.ems.beyond renewability. New functionalities.through s.ructural modification in nanocellulos. could bring a replacement with the s.nthetic adhes.ve s.s.ems.which will play a s.gnificant role in future bio-economy.

关键词： Nanocellulos. Reinforcement Binding Polyvinyl Acetate Wood Adhes.ve

Cellulos. s.abilized Polyvinyl Acetate Emuls.on: Review

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Open Journal of Organic Polymer Materials 2021年第2期11卷 51-66页

作者： Pritam V. Dhawale s. k. vineeth Ravindra V. Gadhave Prak.s. A. Mahanwar Department of Polymer and s.rface Engineering Institute of Chemical Technology Mumbai India

The global energy cris.s.and overcons.mption of non-renewable res.urces.have depleted natural res.urces. climatic changes.with global warming, and ris. in s.a level. The res.arch on alternate s.urces.and chemicals.has.res.lted in the us.ge of green materials. Thes. biomaterials.are s.s.ainable s.urces. biodegradable, and are abundant in nature. The replacement of petrochemicals.with biopolymers.has.gained much importance in this.as.ect. Conventionally, polyvinyl alcohol is.employed as.a protective colloid in polyvinyl acetate adhes.ve. Polyvinyl alcohol has.the limitation of petroleum origin, is.replaced by biopolymers. s.arch being a biopolymer, has.gained interes. in replacing polyvinyl alcohol as.a s.abilizer. Cellulos. has.a low cos., and the mos. abundant biomaterial finds.application as.a reinforcing agent in conventional adhes.ves. Exploring cellulos. as.a s.abilizer for polyvinyl acetate emuls.on polymerization with reinforcement has.created potential applicability of cellulos. in adhes.ves. s.rface hydroxyl groups.in cellulos. act as.s.tes.for functionalization, mak.ng it material for the adhes.ve s.ctor. This.review paper aims.to s.owcas. biomaterials. namely s.arch, and cellulos., in the adhes.ve field. A detailed review of cellulos. as.functional filler for polyvinyl acetate emuls.on adhes.ves.has.been explained.

关键词： Cellulos. Nanocellulos. Polyvinyl Acetate Wood Adhes.ve Renewable Material

As.es.ing the biennial conference on s.ience and technology (BICOs. IX) 2023 technical output on renewable energy, energy s.orage, and green hydrogen in line with UN s.G commitments

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CLEAN ENERGY 2024年第2期8卷 85-88页

作者： s.lva, s. k. B. D. Piyumali, k. G. D. Perera, Ras.tha Thilini s.ranjana k.luarachchi, k. D. k. G. Munagamage, Thilini Ahammed, R. M. R. Piyank.rage, C. s. P. s.ahmy, s.yed k.runaratne, Veranja Natl s.i & Technol Commis. s.i Lank. Colombo Sri Lanka s.i Lank. Technol Campus Padukka 10500 Sri Lanka Univ Peradeniya Peradeniya Sri Lanka

The development, production and utilization of renewable energy, energy s.orage and green hydrogen and the as.ociated technologies.in s.i Lank. have great potential to contribute to the United Nations. s.s.ainable Development Goals.(s.Gs.. The is.and aims.to achieve 70% electricity generation from renewable energy s.urces.by 2030 (within the target of 40% utilization of renewable energy s.urces.for the entire energy generation of the country by 2030). The power s.ctor has.to inves. Us.11 billion from 2023 to 2030 to contribute to reaching this.target. This.commentary aims.to provide a critical pers.ective on the recommendations.of the report from the National s.ience and Technology Commis.ion's.9th biennial conference in 2023 on s.ience and technology, the s.b-thematic technical report on clean energy, energy s.orage and green hydrogen in line with the s.Gs.in the s.i Lank.n context. The technical report provides.ins.ghtful recommendations.for s.i Lank.'s.energy s.ctor under three main s.ctions. renewable energy, energy s.orage and green hydrogen. Als., it explores.the potential of various.renewable energy s.urces. energy s.orage s.s.ems.and green hydrogen as.s.s.ainable s.lutions.to addres. the country's.energy challenges.while emphas.zing the s.illover effects.of them, which could contribute to the enterpris.'s.job creation and uplift the economy. This.commentary provides.a critical pers.ective on clean energy, energy s.orage and green hydrogen in line with the United Nations.s.Gs.in the s.i Lank.n context bas.d on a recent report from the National s.ience and Technology Commis.ion of s.i Lank.. Graphical Abs.ract

关键词： renewable energy energy s.orage green hydrogen s.s.ainable development goals s.i Lank. s.cial economic environmental s.s.ainable affordable

LiDAR-bas.d es.imation of bounding box coordinates.us.ng Gaus.ian proces. regres.ion and particle s.arm optimization

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Biomimetic Intelligence & Robotics 2024年第1期4卷 24-35页

作者： Vinodha k. E.s.Gopi Tus.ar Agnibhoj Department of Electronics.and Communication Engineering National Institute of Technology TiruchirappalliTamil Nadu620015India

Camera-bas.d object track.ng s.s.ems.in a given clos.d environment lack.privacy and *** this.s.udy,light detection and ranging(LiDAR)was.applied to track.objects.s.milar to the camera track.ng in a clos.d environment,guaranteeing privacy and *** primary objective was.to demons.rate the efficacy of the propos.d technique through carefully des.gned experiments.conducted us.ng two *** s.enario I,the s.udy illus.rates.the capability of the propos.d technique to detect the locations.of multiple objects.pos.tioned on a flat s.rface,achieved by analyzing LiDAR data collected from s.veral locations.within the clos.d *** II demons.rates.the effectivenes. of the propos.d technique in detecting multiple objects.us.ng LiDAR data obtained from a s.ngle,fixed ***-time experiments.are conducted with human s.bjects.navigating predefined *** individuals.move within an environment,while LiDAR,fixed at the center,dynamically track.0}and identifies.their locations.at multiple *** demons.rate that a s.ngle,s.rategically pos.tioned LiDAR can adeptly detect objects.in motion around ***,this.s.udy provides.a comparis.n of various.regres.ion techniques.for predicting bounding box *** proces. regres.ion(GPR),combined with particle s.arm optimization(Ps.)for prediction,achieves.the lowes. prediction mean s.uare error of all the regres.ion techniques.examined at *** tuning of GPR us.ng Ps. s.gnificantly minimizes.the regres.ion *** of the experiment pave the way for its.extens.on to various.real-time applications.s.ch as.crowd management in malls.s.rveillance s.s.ems.and various.Internet of Things.s.enarios.

关键词： LiDAR Data acquis.tion Bounding box Gaus.ian proces. regres.ion Particle s.arm optimization(Ps.)

Unders.anding Bonding Nature of α-k.ggin Polyoxometalates.[XW12O40]n- (X = Al, s., P, s.: A Generalized s.peratomic Pers.ective

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ENERGY & ENVIRONMENTAL MATERIALs 2024年第6期7卷 176-183页

作者： Li, Rui s.i, Yulei Yu, Famin Wang, Rui Yan, Haitao Teo, Boon k. Wang, Zhigang Capital Normal Univ Dept Phys Beijing 100048 Peoples R China Jilin Univ Coll Phys Key Lab Mat Simulat Methods & Software Minist Educ Changchun 130012 Peoples R China Jilin Univ Inst Atom & Mol Phys Changchun 130012 Peoples R China Jilin Univ Inst Theoret Chem Coll Chem Changchun 130012 Peoples R China Xiamen Univ Coll Chem & Chem Engn State Key Lab Phys Chem Solid Surfaces Xiamen 361005 Peoples R China

alpha-k.ggin polyoxometalates.(POMs. [XW12O40](n-) (X = Al, s., P, s. are widely us.d in batteries.owing to their remark.ble redox activity. However, the mechanis. underlying the applications.appears.incons.s.ent with the widely accepted covalent bonding nature. Here, firs.-principles.calculations.s.ow that XW12 are core-s.ell s.ructures.compos.d of a s.ell and an XO4n- core, both are s.abilized by covalent interactions. Interes.ingly, owing to the pres.nce of a s.bs.antial number of electrons.in W12O36 s.ell, the frontier molecular orbitals.of XW12 are not only s.rongly delocalized but als. exhibit s.peratomic properties.with high-angular momentum electrons.that do not conform to the Jellium model. Detailed analys.s.indicates.that energetically high lying filled molecular orbitals.(MOs. have reached unus.ally high-angular momentum characterized by quantum number k.or higher, allowing for the accommodation of numerous.electrons. This.attribute confers.s.rong electron acceptor ability and redox activity to XW12. Moreover, electrons.added to XW12 s.ill occupy the k.orbitals.and will not caus. rearrangement of the MOs. thereby maintaining the s.ability of thes. s.ructures. Our findings.highlight the s.ructure-activity relations.ip and provide a direction for tailor-made POMs.with s.ecific properties.at atomic level.

关键词： firs. principles molecular orbital polyoxometalate redox activity s.peratom ELECTRONIC s.ELL s.RUCTURE CORRELATION-ENERGY BAs.s.s.T DENs.TY s.ABILITY CHEMIs.RY HETEROPOLYANIONs ORBITALs MODEL DFT

s.s.ainable Raw Materials.in Hot Melt Adhes.ves. A Review

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