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NGHIEN CCrU TRRO BO! NGHIEN GIJIl CAU TRilC VA TlNH CHAT CUA HfiN HUT PULYMER TV PULYSTYREN VATINH RUT RIEN TJNH AXIT RENZUIC N G U Y I N B A N G MAG, TRAN DUY THANH, HA THUC CHI NHAN Rhoa Rhoa hpc VJ[.]
N G H I E N CCrU - TRRO BO! NGHIEN GIJIl CAU TRilC VA TlNH CHAT CUA HfiN HUT PULYMER TV PULYSTYREN VATINH RUT RIEN TJNH AXIT RENZUIC N G U Y I N B A N G MAG, TRAN DUY THANH, HA THUC CHI NHAN Rhoa Rhoa hpc VJt li^u, Tm^n^ P?i hpc Khca hpc Tu fihi^n Pai hpc Qu5'c gia TP H^ Chi Mihh Ngay Polystyrene la mat nhiTng loai polymer da va dang diroc sii dung r@ng rai nhlg'u ITnh v^rc ciia ditl sS'ng va cSng nghlfp [ , 2, 31 Nhirng polymer cd ngufin go'c t£ng htfp tiir nguy6n liSu hda th^ch, sau ket thuc vong ddi suf dgng, d^c tinh khd phSn h&y, Polystyren Irfi loai rae thdi G nhlim moi trudng [4, 5, 61 De giai quye't IhiTc tr^ng nay, nhie'u nghlSn ciiu da diroc thuc hien thdi gian vira qua Mdt hirdng di diTdc quan t3m la td'ng hdp hdn hdp polymer tir tinh hot deo (TPS) va nhUa nliidt deo PS TPS ddng vai trd nhif mgt cha'l ddn cd ndng ph3n huy sinh hpc cho nhua nhiet deo PS [7, ] Trong nghien cl?u nay, dSc diem ca'u true va cac tinh chS't cua hdn hap PS/TPS da diroc xem xet d ba ty le khac 10/90, 20/80 va 30/70 De cai thlSn kha nang tUdng thich vdi polymer nen, tinh bdt da dUdc bie'n tinh bang each ghep vdi axil Benzoic de giup cai thien kha nang phan tan cjja tinh bdt vao polymer nd'n td't hdn Dd bS'n keo cua vdt lidu dirsc tdng cirttng ham lirglng tinh bdt (ghep 5% axit Benzoic) % so vdi hdn hdp Tir khda: Polystyrene, tinh bdt, axIt Benzoic * STUDY MODPHOLOGY AND PDOPEDTIES OF BLEND FDOM POLY6TYI2ENE AND BENZOIC ACID MODIFIED STADCH Polystyrene was widely used in many fields because it bosses a lot of gooil properties [1, 2,3] But this polymer likes otfier synthetic polymers from mineral-oil Alter finishing ttieir functional life (hey have to spend many years to degrade and residues liave resulted in a broad range of pollution, litter and waste disposal problems for the society [ , , ) To resolve this problem, many researches have been investigated for along time A good choice, composite from plasticized starch (TBS) and PS Is concerned as an exchangeable material [7,8] In this study, the properties of starch/PS-g-Benzcic acid have been investigated The TBS as a fiiier for thermoplastics has been tested using three various ratios of PS/TPS-gBenzoic acid 90/10; 80/20 and 70^0 To improve the compatibility of tbe starch witli the polymer matrix, treatment of starcii have also been performed by grafting Benzoic acid on the structure of starch to mal(e it enhance hydrophobic ability From there, starch could be dispersed into polymer matrix tc malte homogeneous morphology The mechanical properties of the materials are enhanced at ratio PS/TPS-g- 5% Benzoic acid was 80/20 Keywords: Polystyrene, starcti, Benzoic acid Gidi thieu Trong tinh hinh hien d nhiem mdi trUdng dang la van d l cap bdch, de dpa sy sd'ng cua tat ea eae loai sinh vat tren trai da't Cde loai rae thai, dae bidt Id ede toai bao bi nyton,_nhua phe thai dang trd ndi to khdng nhd eua xa hpi, gay anh hUdng nghiem din sQc khoe vd ddi sd'ng ngudi Hau hit eae loat potyme truyen thd'ng dupe tdng hdp tU ngudn nguyen lieu hda thach diu khdng cd kha nang phdn huy sinh hpc Do dd, cdc san pham sau qua trinh sQ dyng da trd ngudn rae thai khd lai ehe, gay d nhidm den mdi trudng (vi qua trinh phan hijy dien rat cham hoac gan nhQ la khdng phan hCiy dUde) Dd Id ly ma thdi gian gan ddy So nam 2013 Tapchi KHOilHO CONG NGHl VIET M H NGHieNCQU-TRflODOl polyme ph§n huy sinh hpc da va dang thu hut si; quan tam cCia cac nh^ khoa hgc tren to^n th^ gidi Q4 bcio v§ moi trudng, tranh tinh tr?ng nhiim ng^y c^ng t5ng nha hien nay, doi hdi phiii phcit tri^n cac Scin phim v$t li$u poiymer th§n thi§n vdi moi trudng hdn, cd l