Polyolefins rapid screening

Flego [1] recommends the use of micro devices for automated measurement and microanalysis of high-throughput in situ characterization of catalyst properties. Murphy et al. [5] stress the importance of the development of new reactor designs. Micro reactors at Dow were described for rapid serial screening of polyolefin catalysts. De Bellefon ete al. used a similar approach in combination with a micro mixer [6], Bergh et al. [7] presented a micro fluidic 256-fold flow reactor manufactured from a silicon wafer for the ethane partial oxidation and propane ammoxidation. 

DSC is specified in USP for the physical testing of PE containers the quality of packaging material is of decisive importance for the protection of raw materials and end products, such as primary packaging material. As shown in Fig. 2.4, unprotected PE samples decompose almost immediately at the test temperature. However, a PE sample containing 0.04% stabiliser remains protected for approximately 16 min at the test temperature, whereas the PE sample containing 0.055% stabiliser is protected for 25 min [151]. The DSC test thus provides a rapid method of screening for the proper AO levels in a polymer. Bharel et al [152] have reported DSC-OIT for performance evaluation of two diamide antioxidants in HDPE and Hakani et al. [153] for the evaluation of oxidative stability of flexible polyolefins (FPO) with the biological y-oryzanol and a-tocopherol antioxidants for food and medical applications. 

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