INSTITUTUL NAÅ¢IONAL DE CERCETARE-DEZVOLTARE - ICECHIM

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2. Multifunctional materials and nanocomposites - OTHE COMPOSITES OF WASTE POLYPROPYLENE MODIFIED WITH STYRENE-ISOPRENE BLOCK-COPOLYMERS. THE MOLECULAR MASS EFFECT OFSTYRENE-ISOPRENE BLOCK-COPOLYMERSGhioca Paul*, Spurcaciu Bogdan*, Iancu Lorena*, Coserea Ramona *, Cincu Cornel**,Degeratu Cristinel**, Gardu Radita**** Institutul National de Cercetare- Dezvoltare pentru Chimie si Petrochimie –<strong>ICECHIM</strong>-Bucuresti, Splaiul Independentei, Nr. 202 060021, Bucuresti, Romania** Universitatea Politehnica Bucuresti, Splaiul Independentei, Nr. 313, Sector 6, 060021,Bucuresti, Romania***Institutul de Cercetari pentru Acoperiri Avansate-ICAAB-dul Theodor Pallady 49 A ,Bucuresti, RomaniaThe linear styrene-isoprene block-copolymers (SIS) were synthesized via anionicthree stages sequential polymerization of monomers in cyclohexane solution initiated with n-butyllithium, by adding the next monomer only after the total consumption of the previousone. At the end of each reaction step, samples were removed from the polymerization reactorin order to determine the monomer conversion and the molecular mass of the constituentblocks.The block copolymers molecular weight were determined by gel permeationchromatography (GPC) and were characterizated by Fourier Transform Infrared Spectroscopy(FT-IR), mechanical properties, differential scanning calorimetry (DSC), dynamic mechanicalanalysis (DMA), thermo-gravimetric analysis (TGA).The waste polypropylene was modified in melt state with 5 – 30 % amount of linearstyrene-isoprene block-copolymers with different molecular mass and the composites werephysical-mechanical characterized.The present research focuses especially on establishing the molecular mass of linearstyrene-isoprene block-copolymers which ensure the highest modified in melt state of wastepolypropylene.The main effect of modified waste polypropylene with linear styrene-isoprene blockcopolymersconsists in the obtaining the cheap composite materials which show highperformance impact strength especially below 0°C, usual higher impact strengths (2-4 timeshigher) even than the virgin polypropylene form current production.
REGISTRATION FORM Priochem 8:2. Multifunctional materials and nanocomposites - OName: MIR Mohammad Alavi NigjehScientific title / position: Associate Prof./ Academic staffInstitution: IMAM KHOMEINI INTERNATIONAL UNIVERSITYInstitution Address: DANESHGHAH STREET, IMAM KHOMEINI INTERNATIONALUNIVERSITY, FACULTY OF SCIENCE, <strong>DE</strong>PARTMENT OF CHEMISTRYPhone: +989121935414Email: drmm.alavi@gmail.comFax: +982813780040Wish to participate: with paperPaper Type: oral communicationSection: Multifunctional materials and nanocompositesPaper Title: polyurethane rigid foam nano-composites by incorporation of fictionalized nanoparticlesAuthors: Mir Mohammad Alavi Nikje, Zahra Gholinataj
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INSTITUTUL NAÅ¢IONAL DE CERCETARE-DEZVOLTARE - ICECHIM

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