Dynamic-mechanical and differential scanning calorimetry measurements on crosslinked poly(ester-siloxane)-urethanes

Effect of cyclic freeze–thawing process on the structure and properties of collagen

“…A useful parameter which is dimensionless and conveys no physical magnitude but is a measure of the ratio of energy lost to energy stored in a cyclic deformation is the loss tangent, tan ı = G /G [21]. The tan ı values of the COL sample over the whole frequency range were far lower than 1 (around 0.4), indicating dominant elastic nature of the material under these conditions.…”

Atmospheric and soil degradation of aliphatic–aromatic polyester films

“…Since crosslinking of films causes non-uniformity of the crystal lattices, making them melt at different temperatures, the onset temperature of the melting peak was used as input data for the Avrami equation to verify the gel content as previously reported by Ioan et al [19] and Kijchavengkul et al [20].…”

Micromorphology and phase behavior of cationic polyurethane segmented copolymer modified with hydroxysilane

“…thermal stability and flexility), have attracted special attention of many researchers in the last decades [26][27][28][29][30]. Moreover, the combinations of polyurethane and polysiloxane would have better heat resistance and lower temperature flexibility than polyurethane and better mechanical properties and abrasion characteristics than polysiloxane [31][32][33].…”