Graft polyesters

P) 3-P diluted with acetone, wood loaded and heated. Grafted polyester side chains on swollen cell wall cellulose. Carbonyl end groups reacted with copper or zinc to decrease fungi attack. Compression strength increase. 

Reactive blending of thermoplastic starch/polymer blends has been examined recently and aims to increase properties and performance via control of blend morphologies. Mani [58, 59] examined different techniques for compatibilising starch-polyester blends. They examined development of maleic anhydride grafted polyester/starch blends and starch-g-polycaprolactone... 

In the context of this chapter, the use of thermoplastic starch in blends with thermoplastic resins is of the main interest. As shown in Table 16.11, several blends have been developed, e.g., with vinyl alcohol copolymers (EVAl), polyolefins, aliphatic polyesters such as poly-e-caprolactone (PCL) and its copolymers, or polymers of glycols (e.g., 1,4-butanediol) with succinic, sebacic, adipic, azelaic, decanoic or brassihc acids, PCL + PVC. Compatibilization is possible by amylose/EVAl V-type complexes, starch grafted polyesters, chain extenders like diisocyanates, epoxies, etc. [Bastioli et al., 1992, 1993]. 

The presence of compatibilizers between starch and aliphatic polyesters is preferred. Some examples are amylose/EVOH V-type complexes [92], and starch-grafted polyesters. The use of chain extenders such as diisocyanates and epoxides is preferred. Such materials are characterized by excellent compostability, excellent mechanical properties, and reduced sensitivity to water. 

Scheme 30.11 CuAAC click functionalization of poly(propargyl glycolide) with oligoethylene glycol and 1-dycyl azide. The grafted polyester exhibits an LCST behavior in aqueous solution that can be varied from...

The stress-strain curves of tire chitin nanofiber-g-poly(LA-co-CL) films under tensile mode exhibited the larger fracture strain values (4.3-6.2%) than those of the original pre-treated film. Furthermore, the fracture stress values relatively tended to increase with increasing the amounts and the LA/CL composition ratios of the grafted polyesters, whereas the fracture strain values decreased in this order. These data suggested that the mechanical properties of the chitin nanofiber-g-poly(LA-co-CL) films were strongly affected by the amounts and the LA/CL composition ratios of the grafted polyesters. In comparison with the aforementioned chitin nanofiber PVA blend films (Kadokawa et al., 2011), the present ehi-tin nanofiber-g-poly (LA-co-CL) films showed much better mechanical properties. 

Housings for extracorporeal devices (acrylics, poly(carbonates), poly(methylpentane)], catheters, angioplasty balloons, sutures, vascular grafts (polyester textiles, expanded PTFE), medical tubing oxygenator and hemdi-alysis membranes... 

In cyanoethylation grafting, polyester composites made up of cyano ethylated sisal showed improved mechanical properties as compared to the control. This may be due to bonding of P-cyanoethyl groups of the fiber with the polyester, thereby improving the fiber matrix orientation [36, 37]. 

Journal of Applied Polymer Science 76, No.3,18th April 2000, p.350-6 PREPARATION OF AN ACRYLIC-GRAFTED POLYESTER AND ITS AQUEOUS DISPERSION -EFFECT OF THE MOLECULAR STRUCTURES OF THE GRAFTED POLYESTERS ON VISCOSITY AND RHEOLOGY OF DISPERSION Shimizu T Higashiura S Ohguchi M Toyobo Co.Ltd. 

Endovascular stent graft Polyester (PET) Multifilament Woven... 

Vascular grafts Polyester and PTFE filaments Warp knitted... 

El-Gendy, E. H. Ali, N. M. Marie, M. M. El-Shanshoury, 1. A. Dyeing kinetics of radiation-grafted polyester fabric using different dyes. Indian J. Fibre Text. Res. 2007, 32, 232-240. 

The SEM image of the resulting CNF-5 -poly(LA-co-CL) film showed that the nanofibers still remained, but the fiber width increased (60-100 nm) compared with those of the original pretreated film and some fibers were merged at the interfacial areas, that was probably caused by the grafted polyesters present on... 

CL feed molar ratios. Moreover, the LA/CL composition ratios in the polyesters were always higher than the feed ratios. The SEM image of the CNF- -polyfLA-co-CL) film with the higher grafting amount (20%) obtained by the LA/CL feed molar ratio = 50 50 showed the morphologies where the nanofibers were frequently covered by the grafted polyesters compared with that of the CNF-5-poly(LA-co-CL) film with the lower grafting amount. 

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