Poly(e-caprolactone) (PCL)/layered double hydroxide (LDH) nanocomposites were prepared success- fully via simple solution intercalation. The nonisothermal melt crystallization kinetics of neat PCL and its LDH nano- composites was investigated with the Ozawa, Avrami, and combined Avrami-Ozawa methods. The Ozawa method failed to describe the crystallization kinetics of the studied systems. The Avrami method was found to be useful for describing the nonisothermal crystallization behavior, but the parameters in this method do not have explicit meaning for nonisothermal crystallization. The combined Avrami- Ozawa method explained the nonisothermal crystallization behavior of PCL and its LDH nanocomposites effectively. The kinetic results and polarized optical microscopy obser- vations indicated that the addition of LDH could affect the mechanism of nucleation and growth of the PCL matrix. The Takhor model was used to analyze the activation ener- gies of nonisothermal crystallization. V C 2010 Wiley Periodicals,

Crystallization behavior of poly(ε-caprolactone)/layered double hydroxide nanocomposites

Non-isothermal crystallization of polymers

Crystallization kinetics and nucleation activity of filler in polypropylene/surface-treated SiO2 nanocomposites

The heat and flame resistance of high performance fibres are reviewed according to the literature data. The performance is discussed considering the physical and chemical structure of the fibres. Some selected high performance fibres are then evaluated using the cone calorimeter as a fire model to provide realistic data on the fire behaviour of the fibres. They are also examined in terms of heat resistance using combined TGA/DSC. The results are discussed and compared with literature data. Heterocyclic rigid-rod polymers (poly (p-phenylene-2,6-benzobisoxazole or PBO (Zylon®) and poly(2,6-diimidazo (4,5-b:4′,5′-e) pyridinylene-1,4 (2,5-dihydroxy) phenylene or PIPD (M5)) exhibit the best performance (little or contribution to fire, low smoke and good heat resistance) and offer a good combination between heat and flame resistance and mechanical properties. Copyright © 2002 John Wiley & Sons, Ltd.

Heat resistance and flammability of high performance fibres: A review

The crystallization kinetics and degree of crystallinity of polycaprolactone (PCL) were studied using the technique of differential scanning calorimetry (DSC). The crystallization exotherms measured using DSC were analyzed using a modified Avrami equation. The modification limited the analysis of the data to the primary crystallization process, where the Avrami equation is applicable. Both the degree of crystallinity and primary composite rate constant were found to decrease with increasing molecular weight. The observations have been explained in terms of the unified reptation-nucleation theory. Copyright © 2006 John Wiley & Sons, Ltd.

The effect of molecular weight on the crystallization kinetics of polycaprolactone

Non-isothermal crystallization kinetics of poly(p-phenylene sulphide)

Crystallization kinetics of poly(p-phenylene sulphide): effect of molecular weight

Among the various high temperature polymers, those based on aromatic units, such as poly(2, 6-dimethylphenylene oxide) (PPO), poly(pheny1ene sulfide) (PPS), poly(ether ether ketone) (PEEK), and poly(ether sulfone) (PES), have attracted much attention in the last few years due to their good thermal and chemical resistance. One of these polymers, PPS, is also an important high strength/high temperature engineering thermoplastic that is finding increasing use in technological applications such as molding resins, fibers, and matrices for thermoplastic composites. PPS consists of para-phenylene units alternating with sulfide linkages. The first known report of its synthesis was by Grenvesse in 1898 [1]. However, interest in the synthesis of PPS only began in 1948 when Macallum 121 described the preparation of phenylene sulfide polymers by the melt reaction of p-dichlorobenzene with sodium carbonate and sulfur. Further investigation on the synthesis of PPS by Lenz and coworkers [3–5], and later by Edmo...

POLY(p-PHENYLENE SULFIDE)—AN OVERVIEW OF AN IMPORTANT ENGINEERING THERMOPLASTIC

Poly(4-methyl-l-pentene) (PMP) is a linear α-polyolefin with isobutylbranches and with very interesting properties. From a practical point of view. PMP presents high optical transparency. relatively high thermal stability and chemical resistance. in addition to excellent dielectric characteristics and microwave transparency. Consequently. a wide range of applications is possible for this polymer. The chemical resistance. temperature stability. and transparency provide uses in medical equipment such as hypodermic syringes. blood collection and transfusion equipment. pacemaker parts. and respiration equipment; in chemical laboratory equipment such as cells for spectroscopic and optical analysis; and in wire and cable coating. Its microwave transparency grants applications in microwave oven cookware, food packaging, and service trays.

Leonardo C. Lopez

Papers

Non-isothermal crystallization kinetics of poly(p-phenylene sulphide)

Crystallization kinetics of poly(p-phenylene sulphide): effect of molecular weight

POLY(p-PHENYLENE SULFIDE)—AN OVERVIEW OF AN IMPORTANT ENGINEERING THERMOPLASTIC

Synthesis, Structure, and Properties of Poly(4-Methyl-1 -Pentene)

Crystallization kinetics of poly(p-phenylene sulphide): the effect of branching agent content and endgroup counter-atom