Factors affecting the adsorption of stabilisers on to carbon black (flow micro-calorimetry studies): Part II : Hindered amine light stabilisers (HALS)

摘要: The interaction of hindered piperidine light stabilisers (HALS) with carbon black has been examined using flow micro-calorimetry (FMC) and Fourier transform infrared spectroscopy (FTIR). Significant differences in both the overall adsorption activity molar heats probe are observed. Differences behaviour between different types were clearly evident and, as a previous paper (see reference 1, latter paper, surface chemistry blacks investigated is extensively analysed by XPS, FTIR, N2 BET Karl–Fischer analysis), mainly to be due chemistry. specific area merely physically affected level heat (per unit mass black). Variation degree substitution amine an important factor that found influence HALS, well number active sterically accessible functional groups per HALS molecule. In some cases adsorbed could detected FTIR; shifts absorption frequencies associated adsorbate substrate yielded significant insight into mode several investigated.