Acrylic acid-modified polypropylene

The same technique can be used to dye a material that is otherwise difficult to dye. An ethylene-propylene copolymer rubber was reacted first with maleic anhydride, then with an aromatic amine dye in an extruder to produce a dyed rubber.81 Dye sites can also be inserted into polyolefins by grafting them with dimethylaminoethyl methacrylate, using azo or peroxide catalysts in an extruder.82 jV-Vinylimidazole has been grafted to polyethylene in an extruder with the help of dicumylperoxide.83 The product was mixed with an acrylic acid-modified polypropylene and used to compatibilize polyethylene and polypropylene. This could be helpful in the recycling of mixed polyolefins from municipal solid waste. Recycling of cross-linked (thermoset) polymers is more of a problem because they cannot be remelted in an extruder. However, they can be if... [Pg.208]

AM Adur, S Flynn. Performance Enhancement in Talc-Filled Polypropylene Obtained by Addition of Acrylic Acid Modified Polypropylene. ANTEC, 1987, pp. 508-513. [Pg.80]

Heat deflection temperature changes are shown in Fig. 14.4. Highest heat deflection temperatures were obtained with KMG silane treatment and by addition of an acrylic acid modified polypropylene. The 241 and 240°F heat deflection temperatures are approximately 20% higher than observed with untreated mica. [Pg.530]

There are polymer additives that can serve the function of coupling agents. Acrylic acid-modified polypropylene has been used to improve the properties of filled and reinforced polypropylene compounds. Fig. 7 shows the improvement in tensile strength that is obtained... [Pg.553]

A carbon black addition above a percolation threshold of 5 vol% increases the conductivity until a plateau is reached at 20 vol%. " As the level increases above 10 vol%, the viscosity of the filled polypropylene increases rapidly (see Figure 9.9). As with polyethylene, carbon black is preferentially contained in one phase of a two phase blend."" This phenomenon is used in practice to lower the concentration of carbon black required for a certain level of conductivity. Here, again, carbon black is concentrated in the preferred location. Carbon black and copper powder were used to improve connectivity of YBaCuO in ceramic superconductors. "" Dispersion of copper particles and the related changes in conductivity were enhanced by the presence of acrylic acid modifier. ... [Pg.667]

Mader and Freitag (14) used the single-fiber pullout method to characterize the interfacial shear strength of chemically coupled GFRP composites having the polymer matrix also modified by acrylic acid grafted polypropylene. By using... [Pg.430]

Coiqposltlon Acrylic acid modified homopolymer polypropylene Physical Form Pellets... [Pg.2]

ABA ABS ABS-PC ABS-PVC ACM ACS AES AMMA AN APET APP ASA BR BS CA CAB CAP CN CP CPE CPET CPP CPVC CR CTA DAM DAP DMT ECTFE EEA EMA EMAA EMAC EMPP EnBA EP EPM ESI EVA(C) EVOH FEP HDI HDPE HIPS HMDI IPI LDPE LLDPE MBS Acrylonitrile-butadiene-acrylate Acrylonitrile-butadiene-styrene copolymer Acrylonitrile-butadiene-styrene-polycarbonate alloy Acrylonitrile-butadiene-styrene-poly(vinyl chloride) alloy Acrylic acid ester rubber Acrylonitrile-chlorinated pe-styrene Acrylonitrile-ethylene-propylene-styrene Acrylonitrile-methyl methacrylate Acrylonitrile Amorphous polyethylene terephthalate Atactic polypropylene Acrylic-styrene-acrylonitrile Butadiene rubber Butadiene styrene rubber Cellulose acetate Cellulose acetate-butyrate Cellulose acetate-propionate Cellulose nitrate Cellulose propionate Chlorinated polyethylene Crystalline polyethylene terephthalate Cast polypropylene Chlorinated polyvinyl chloride Chloroprene rubber Cellulose triacetate Diallyl maleate Diallyl phthalate Terephthalic acid, dimethyl ester Ethylene-chlorotrifluoroethylene copolymer Ethylene-ethyl acrylate Ethylene-methyl acrylate Ethylene methacrylic acid Ethylene-methyl acrylate copolymer Elastomer modified polypropylene Ethylene normal butyl acrylate Epoxy resin, also ethylene-propylene Ethylene-propylene rubber Ethylene-styrene copolymers Polyethylene-vinyl acetate Polyethylene-vinyl alcohol copolymers Fluorinated ethylene-propylene copolymers Hexamethylene diisocyanate High-density polyethylene High-impact polystyrene Diisocyanato dicyclohexylmethane Isophorone diisocyanate Low-density polyethylene Linear low-density polyethylene Methacrylate-butadiene-styrene... [Pg.958]

Reactive grafting of polyolefins, polyethylenes (PE), or polypropylenes (PP) was disclosed. The extruder was modified, allowing to feed polymer, grafting monomer and peroxide. As an example, PP was grafted with acrylic acid... [Pg.1697]

Acrylate styrene acrylonitrile Acrylate modified styrene acrylonitrile Acrylic acid ester rubber Acrylonitrile butadiene rubber or nitrile butadiene rubber Acrylonitrile butadiene styrene Acrylonitrile styrene/chlorinated polyethylene Acrylonitrile methyl methacrylate Acrylonitrile styrene/EPR rubber or, acrylonitrile ethylene propylene styrene Alpha methyl styrene Atactic polypropylene Butadiene rubber or, cis-1,4-polybutadiene rubber or, polybutadiene rubber Butadiene styrene block copolymer Butyl rubber Bulk molding compound Casein formaldehyde Cellulose acetate Cellulose acetate butyrate Cellulose acetate propionate Cellulose nitrate Chlorinated polyethylene Chlorinated polyvinyl chloride Chloro-polyethylene or, chlorinated polyethylene. [Pg.135]

In Chapter 3, mechanical properties of glass fiber-reinforced polypropylene are improved by addition of a coupling agent. Likewise, the in situ generation of modified polypropylene by grafting acrylic acid onto the polymer backbone in the Nichols and Kheradi investigation yields enhanced tensile strength compared with unfilled polypropylene and uncoupled composite (Fig. 10.2). [Pg.344]

Graft copolymers between unsatnrated acids, especially acrylic acid and maleic anhydride (MA), and polyolefins (PE and PP) are widely used as surface modifiers and compatibilisers, sometimes in combination with bi-functional coupling agents [46], for talc, calcium carbonate and calcined clays. Such polymer coatings include polypropylene-maleic anhydride [47], polypropylene c/s-4-cyclohexene-l,2 dicarboxylic acid [48], polystearyl or polylauryl acrylate [49], polypropylene-acrylic acid, partially oxidised poly(butane diol) [50] and ethylene-vinyl acetate copolymers [51]. Acid-containing products can react with basic fillers. With most other types, they will simply adsorb on to the mineral surface, but they can form esters with some non-basic metal hydroxyls, notably silanols. [Pg.28]

Melt intercalation of the polymer into previously organo-modified silicates. It is a very effective method when polymers, such as polyamide-6, polysiloxane and even polystyrene are intercalated. For the formation of PP-based nanocomposites, a compatibilizer such as maleic anhydride grafted polypropylene (PP-MA) or acrylic acid grafted PP is involved, which improves the polyolefin-filler interactions. ... [Pg.284]

Lin Z D, Huang Z Z, Zhang Y, Mai K C, Zeng H M, Crystallization and melting behavior of nano-CaC03/polypropylene composites modified by acrylic acid , J Appl Polym Sci, 2004 91(4) 2443-2453. [Pg.437]

BULK AND NANO MECHANICAL PROPERTIES OF SURFACE MODIFIED POLYPROPYLENE FILMS WITH ACRYLIC ACID AS GRAFTING AGENT... [Pg.454]

The present paper is specially focused on the surface mechanieal properties of polypropylene films heterogeneous modified by using acrylic acid as grafting agent in solution. Surface mechanical properties have been measured by nano-indentation techniques and the chemical treatment induced variation of the mean image roughness, reduced modulus and surface hardness have been assessed. Whetha- beneficial bulk mechanical properties remained actually unaffected by surface chemical modification was checked by determining the tensile deformation behavior, static fracture behavior and dart impact response. [Pg.454]