The photoacoustic spectroscopy applied in the characterization of the cross-linking process in polymeric materials

In order to improve thermal stability of Poly (Vinyl Chloride), a kind of thermal reversible cross-linking agents, the end cyclopentadienyl ethanethiol salts, sodium cyclopentadienyl ethyl mercaptan (CPD-C2H4SNa) was synthesized in this paper. The DSC results proved that the prepared CPD-C2H4SNa has obvious thermal reversible characteristics and the thermal reversible temperature was at 177 °C. The effects of cross-linking agent amount, cross-linking reactive time and temperature on flexible PVC compounds were evaluated through gel content testing. It was showed that the cross-linking agent with 3 Phr is optimum for PVC compounds. Moreover, both the cross-linking reactive time and temperature has effects on gel content of PVC compounds. The gel content of CPD-C2H4SNa cross-linked PVC compounds reaches maximum at 76% for 20 min at 160 °C.The static thermal stability of flexible PVC was measured according to congo red method. The results showed that the thermal stability of PVC compounds was enhanced with increasing cross-linking agent amount.

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Characterization of the Cross-Linking Site of Disintegrins Albolabrin, Bitistatin, Echistatin, and Eristostatin on Isolated Human Platelet Integrin GpIIb/IIIa

Biochemical and Biophysical Research Communications ◽

10.1006/bbrc.1994.1903 ◽

1994 ◽

Vol 202 (1) ◽

pp. 135-140 ◽

Cited By ~ 16

Author(s):

J.J. Calvete ◽

M.A. Mclane ◽

G.J. Stewart ◽

S. Niewiarowski

Keyword(s):

Human Platelet ◽

Cross Linking ◽

The Cross

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Synthesis and characterization of the cross-linked polyurethane–gum arabic blends obtained by multiacrylates cross-linking polymerization

Journal of Elastomers & Plastics ◽

10.1177/0095244312459281 ◽

2012 ◽

Vol 45 (6) ◽

pp. 564-576 ◽

Cited By ~ 4

Author(s):

Stefan Oprea ◽

Veronica Oprea

Keyword(s):

Gum Arabic ◽

Synthesis And Characterization ◽

Cross Linking ◽

The Cross

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Polymer Characterization

10.1007/978-3-658-35926-3_4 ◽

2021 ◽

pp. 89-121

Author(s):

Christopher Taudt

Keyword(s):

Refractive Index ◽

Spatial Distribution ◽

Polymeric Material ◽

Cross Linking ◽

Lorenz Equation ◽

Polymer Characterization ◽

Link Type ◽

Micro Optics ◽

The Cross

AbstractAs discussed in section 10.1007/978-3-658-35926-3_2, the characterization of cross-linking and especially its spatial distribution is crucial for the fabrication of micro optics, MEMS, and semiconductors. Some studies have found that the measurement of the refractive index over the cross-linking process can be used as an indicator for the degree of cross-linking of a sample. According to Kudo et al., [130], the cross-linking of a polymeric material leads to a densification which can be directly related to an increase in refractive index using the Lorentz-Lorenz equation.

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Study of the influence of preparation parameters on sorption properties of porous collagen material

Transaction Kola Science Cetnre ◽

10.37614/2307-5252.2021.2.5.036 ◽

2021 ◽

Vol 12 (2-2021) ◽

pp. 177-179

Author(s):

O. K. Molokanova ◽

◽

S. A. Shirokikh ◽

E. S. Vainerman ◽

M. Yu. Koroleva ◽

...

Keyword(s):

Polymeric Materials ◽

Petroleum Products ◽

Optimal Concentration ◽

Sorption Properties ◽

Cross Linking ◽

Optimal Parameters ◽

Mass Ratio ◽

Drying Temperature ◽

Leather Waste ◽

The Cross

In this work, the dependences of the sorption properties of the porous polymeric materials prepared from the cross- linked collagen on their composition and process specifications were studied. The optimal concentration of glutaraldehyde as a cross-linking agent was 0.5 wt %, the mass ratio of fish and leather waste was 1:1, and the drying temperature was 25 °C. Sorbent samples prepared using optimal parameters were effective in the sorption of petroleum products.

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