Polypropylene acid-grafted

Polypropylene/Acid Grafts. Grafts have been made with maleic anhydride or acrylic acid. These are useful for example in coupling talc and mica into polypropylene. [Pg.344]

PP-g-AA - acrylic acid grafted polypropylene PP-g-MAH - maleic anhydride grafted polypropylene PPacr - acrylic acid grafted polypropylene PPmal - maleic anhdride grafted polypropylene PPS - polyphenylene sulfide PS - polystyrene... [Pg.683]

The interaction of the polymer with the filler is promoted by the presence of reactive functionality in the polymer, capable of chemical reaction or hydrogen bonding with the functionality, generally hydroxyl, on the surface of the filler. Thus, carboxyl-containing polymers, e.g. ethylene-acrylic acid copolymers and maleic anhydride- and acrylic acid-grafted polyethylene and polypropylene interact readily with fillers. [Pg.469]

Scheme 4 Chemistry used to prepare hyperbranched polyfacrylic acid) grafts on polyethylene film, polyethylene powder or polypropylene wafers...

Coupling agents for more inert polymers like polyolefins are often acid-modified versions of the matrix polymer, with maleic acid grafted polypropylene as a prime example. [Pg.481]

Acrylic acid grafted polypropylene Maleic anhydride grafted polypropylene Trimellitic anhydride... [Pg.164]

Polypropylene/EPDM/ graft acrylic acid Polybond 106 BP Improvement of adhesion to PP/EPDM blends... [Pg.66]

Figure 13.12 exhibits the unsteady evolution of the /t-phenylen-bis-maleamic acid grafts on isotactic polypropylene, while plots in Fig. 13.13 confirm the same on atactic polypropylene. [Pg.400]

Rahma, F. and Fellahi, S. (2000) Performance evaluation of synthesized acrylic acid grafted polypropylene within CaCOs/polypropylene composites. Polym. Compos., 21 (2), 175-186. [Pg.139]

Maleated polypropylene and acrylic acid grafted polypropylene are used as chemical coupling agents in filled and reinforced polypropylene. These chemical cou-... [Pg.52]

Maleated or acrylic acid grafted polypropylene can also be used as a coupling agent for these types of compounds. The use of maleated polyethylene and polypropylenes in this application is widely documented. Jancar (36) conducted a study of maleated polypropylene in Mg(OH)2 filled polypropylene. Their findings indicated a critical concentration of carboxylic acid groups. At low levels of addition, the composite yield stress increased sharply. However, at a certain concentration based on filler content, very little increase in yield stress was observed with increased addition of PPgMAH. The possible explanations give for this were... [Pg.75]

The melt phase grafting reaction of acrylic acid onto polypropylene proceeds by a free radical mechanism (10). Radicals generated by thermal decomposition of an initiator abstract hydrogen from the polypropylene backbone and initiate homopolymerization of acrylic acid. Acrylic acid also adds to the sites on the backbone, with the result that the product contains acrylic acid grafted polypropylene (AA-g-PP) and poly(acrylic acid) homopolymer. [Pg.339]

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]

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]