Tackifiers, analysis

Continued speculation exists about the exact interaction of the MQ tackifier with the polysiloxane gum. Dynamic mechanical thermal analysis of a typical silicone PSA commonly shows two major transitions a Tg at low temperatures close to that of the pure gum, and a second T at higher temperature. Increasing tackifier loadings have little effect on the first transition but, as shown in Fig. 15, they shift the second transition to increasingly higher temperature [111]. By using... 

Kim, S.W. Heo, G.S. Lee, G.H. Direct analysis of tackify-ing resins in vulcanized rubber by simultaneous pyrolysis methylation-gas chromatography/mass spectrometry. Bull. Korean Chem. Soc. 1998,19 (2), 164-169. 

Mess A, Vietzke JP, Rapp C, Francke W (2011) Qualitative analysis of tackifier resins in pressure sensitive adhesives using direct analysis in real time timeofflight mass spectrometry. Anal Chem 83((19) 7323-7330. doi 10.1021/ac2011608... 

Tackifier resins are generally brittle amorphous materials with high softening temperatures (typically 40 -150 °C) [242], [243] and low molecular masses (some 10 to some 10 g/mol). Some are liquids that soften below ambient temperature. All should exhibit reasonable compatibility with the elastomer, which can be detected by the clearness of the mixtures or by dynamic mechanical analysis (see Chap. 2.2.2.). Corn-... 

The multi-disciplinary nature of this subject is evident from the titles of the papers. In this session alone, the chemistry and structure of tackifying terpene resins, the adhesion of pigments to textiles, the analysis of fracture surfaces by electron microscopy, the permanent bonding of aircraft structures and development of anerobic adhesives are elaborated. 

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