Investigation on thermo-stabilization effect and nonisothermal degradation kinetics of the new compound additives on polyoxymethylene

Shi, Jian Gao; Jing, Bo; Zou, Xiaoxuan; Liu, Hongjun; Dai, Wei

doi:10.1007/s10853-008-3227-4

Cited by 26 publications

(12 citation statements)

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“…Acetal copolymer resin has greater stability but reduced crystallinity as a result of carbon-carbon bonded groups interspersed in its polymer chain [27]. The formaldehyde and formic acid formed thorough oxidation of formaldehyde can accelerate the depolymerization reaction; this process is usually called the zipper mechanism [28].…”

Section: Resultsmentioning

confidence: 99%

The influence of molecular weight on the properties of polyacetal/hydroxyapatite nanocomposites. Part 2. In vitro assessment

Pielichowska

2012

J Polym Res

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A series of polyoxymethylene (POM)/hydroxyapatite (HAp) nanocomposites for long-term bone implants were prepared by melt processing using POM with different molecular weight. Bioactivity was examined by incubating the samples in simulated body fluid. Moreover, in vitro stability, wettability, thermal stability, and formaldehyde release process were investigated. Results of in vitro investigations show that an increase in HAp content in POM nanocomposites facilitates the formation of an apatite layer on the sample surface. There is no significant influence of HAp concentration on the contact angle values as revealed by wettability studies. Thermogravimetric analysis results indicate that with an increase in HAp content the thermal stability of POM matrix decreases significantly depending upon the POM molecular weight. Finally, it was found the amount of formaldehyde leached out of the samples during the incubation period depends on the HAp content: amounts in excess of 3 ppm were emitted for the samples containing only 10% HAp.

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Section: Resultsmentioning

confidence: 99%

The influence of molecular weight on the properties of polyacetal/hydroxyapatite nanocomposites. Part 2. In vitro assessment

Pielichowska

2012

J Polym Res

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“…The hydroxyl and amine groups on organomodified clay have better effect on the thermal stabilization for POM. This is by the reaction of formaldehyde, which accelerates the further degradation of POM, with the active hydrogen atoms on these groups [33].…”

Section: Resultsmentioning

confidence: 99%

Development and characterization of organoclay‐filled polyoxymethylene nanocomposites for high performance applications

Jose

Alagar

2011

Polymer Composites

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The present work focuses on the preparation and characterization of organo‐modified fluorohectorite (OFH) clay filled polyoxymethylene (POM) nanocomposites by melt mixing method. The dispersion of OFH clay in the polymer matrix was confirmed by X‐ray diffraction (XRD), atomic force microscopy (AFM), and transmission electron microscopy (TEM) analysis. The surface properties of the nanocomposites, assessed by contact angle measurements, showed increase in hydrophobicity relative to the neat polymer. From the measured contact angle values, various surface parameters such as total surface free energy, interfacial free energy, work of adhesion, spreading coefficient, and Girifalco‐Good's interaction parameter were calculated. The thermal, mechanical, and dielectric properties of the nanocomposites were found to be improved by the incorporation of OFH clay into the POM matrix. The aging studies of the nanocomposites carried out by immersing the samples in various solvents showed an increase in the retention of mechanical property by the addition of OFH clay into the POM matrix. POLYM. COMPOS., 2011. © 2011 Society of Plastics Engineers

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“…Chap 3, pp 53-105. DOI: 10.1002/9781118914458.ch3 8 [16,17,18,19] and salts of carboxylic acids (also expected to ease processing -see "3.10.…”

Section: Compounds Reacting With Secondary Reaction Productsmentioning

confidence: 99%

“… Decreasing temperature in the polymer using mineral fillers such as Al(OH) 3 The role of Al(OH) 3 and Mg(OH) 2 was described in the '3.8.2. Strategies for improving flame resistance'.…”

Section: Strategies For Improving Flame Resistancementioning

confidence: 99%

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Polyoxymethylene Additives

Richaud¹

2014

Polyoxymethylene Handbook

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Investigation on thermo-stabilization effect and nonisothermal degradation kinetics of the new compound additives on polyoxymethylene

Cited by 26 publications

References 13 publications

The influence of molecular weight on the properties of polyacetal/hydroxyapatite nanocomposites. Part 2. In vitro assessment

The influence of molecular weight on the properties of polyacetal/hydroxyapatite nanocomposites. Part 2. In vitro assessment

Development and characterization of organoclay‐filled polyoxymethylene nanocomposites for high performance applications

Polyoxymethylene Additives

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