Polycaprolactone parameter

Figure 5-6. (a) Dependence of T on p for mixtures of polymethyl methacrylate with diethyl phthalate. Comparison of experimental results with equation (5-8). Parameters found were ctjctp = 2.32, Tgd = -57 °C, Tgp = 104 °C.f [After F. N. Kelley and F. Bueche, J. Polym. Sci., 50 549 (1961)] (b) Variation of Tg for a miscible polymer blend of polycaprolactone (PCL) and poly(styrene-co-acrylonitrile) (SAN), with a description of the data using the Gordon-Taylor relationship, equation (5-27). The two points at low SAN content have a higher-than-expected Tg because of crystallization of the PCL. [After S-C. Chiu and T. G. Smith, J. Appl. Polym. Sci., 29,1797 (1984). Copyright 1984, Wiley Periodicals, Inc., a Wiley Company.]... 

Compatible Polyblends. When the polymeric materials are compatible in all ratios, and/or all are soluble in each other, they are generally termed polyalloys. Very few pairs of polymers are completely compatible. The best known example is the polyblend of polyCphenylene oxide) (poly-2,6-dimethyl-l,4-phenylene oxide) with high-impact polystyrene (41). which is sold under the trade name of Noryl. It is believed that the two polymers have essentially identical solubility parameters. Other examples include blends of amorphous polycaprolactone with poly(vinyl chloride) (PVC) and butadiene/acrylonitrile rubber with PVC the compatibility is a result of the "acid-base" interaction between the polar substituents (1 ). These compatible blends exhibit physical properties that are intermediate to those of the components. 

Shafiei Sabet, S. tmd Katbab, A.A. (2009) Interfacially compatibilized poly(lactic acid) and poly(lactic acid)/polycaprolactone/organoclay nanocomposites with improved biodegradability and barrier properties effects of the compatibUizer stnictural parameters and feeding route. Jourrtal of Applied Polymer Science, 111, 1954-1963. 

SAR Sarac, A., Tuere, A., Cankurtaran, 0., and Yiltnaz, F., Determination of some thermodynamical interaction parameters of polycaprolactone with some solvents by inverse gas chromatography, Polym. Int., 51, 1285, 2002. 

It should be pointed out that two-dimensional matching can also be found occasionally in polymer epitaxial systems, even though very seldom. For example, when crystallizing polycaprolactone (PCL) on the oriented PE substrate, based on the almost identical orthorhombic unit cells of PCL with parameters a = 0.747, = 0.498, and c=1.705nm and PE... 

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