01710nas a2200193   4500008004100000022001400041245004600055210004600101260006100147300001200208490000700220520110700227653000901334653002001343653001901363653003001382100002401412856008001436       2006                        eng d  a0267-083600aCrystallisation in polymer nanocomposites0 aCrystallisation in polymer nanocomposites  aHUDSON RD, LEEDS LS9 7DL, ENGLANDbMANEY PUBLISHINGcJUL  a797-8060 v223 a<p>Polymer nanocomposites are of interest as they exhibit extraordinary properties compared with the base polymer. The second phase dispersed in the polymer matrix can be carbon nanotubes, semi-conducting inorganic nanoparticles or layer silicates such as clay. Crystallisation in these materials is also of great interest. Polymers exhibit structures at various scales (e.g. lamella, unit cell and spherulites) and the presence of a second phase has a profound effect on crystallisation. General trends observed include acceleration/retardation of crystallisation, changes in spherulite morphology and, in a few cases, changes in the crystal structure. All these observations relate to the presence of a micrometre scale second phase. However, when the dimensions of the second phase are close to the chain dimensions, the effects on crystallisation become particularly interesting. An attempt is made in the present review to address the effect of a nanoscale second phase on aspects such as isothermal and non-isothermal crystallisation, spherulite growth, phase transformation and polymorphism.</p>10aclay10acrystallisation10aNanocomposites10apolymer matrix composites1 aJog, Jyoti, Prakash  uhttps://library.ncl.res.in/content/crystallisation-polymer-nanocomposites-001941nas a2200241   4500008004100000022001400041245008100055210006900136260013100205300001100336490000600347520105800353653001301411653000901424653003001433653002301463100001801486700001901504700002001523700002001543700002801563856010801591       2013                        eng d  a1738-809000aPEEK/SiO2 composites with high thermal stability for electronic applications0 aPEEKSiO2 composites with high thermal stability for electronic a  aPOSCO CENTER, 4TH FL (EAST WING), 892 DAECHI-4-DONG, KANGNAM-KU, SEOUL 135-777, SOUTH KOREAbKOREAN INST METALS MATERIALScJAN  a95-1000 v93 a<p>Thermal and mechanical properties of new high performance polymer matrix composites based on poly(etheretherketone) (PEEK) as matrix and crystalline-silica (SiO2) as reinforcement were discussed for application in electronic packaging substrates or printed circuit boards. The content of SiO2 was varied between 0 and 50 wt. %. Scanning electron microscopy showed uniform dispersion of SiO2 particles in the matrix. Thermogravimetry analysis showed significant increase in thermal stability and char yield with increase in SiO2 content in the matrix. Differential scanning calorimetry showed that SiO2 had a heterogeneous nucleating effect on PEEK, leading to an increase in peak temperature of crystallization and onset crystallization temperature of the composites compared to a pure matrix. The microhardness increased approximately 42%. A modified rule of mixtures with a strengthening efficiency factor equal to 0.06 fit the data nicely. The results show that the prepared PEEK/SiO2 composites may have potential applications in electronics.</p>10ahardness10aPEEK10apolymer matrix composites10aThermal properties1 aGoyal, R., K.1 aRokade, K., A.1 aKapadia, A., S.1 aSelukar, B., S.1 aGarnaik, Baijayantimala  uhttps://library.ncl.res.in/content/peeksio2-composites-high-thermal-stability-electronic-applications-0