High density polyethylene staining

Fig. 2.19 TEM micrographs of (a) a sphemlite centre in a thin film of high density polyethylene stained with RUO4, (b) section of polyethylene-atactic polypropylene block copolymer stained with RUO4. Reproduced with permission (a) from Figure 15 in Trent, Scheinbeim and Couchman, Macromolecules, 1983, 16 589-598 (Copyright 1983) American Chemical Society, (b) fi om Figure 3 in Hong, Copyright (2001) with permission from Elsevier...

Fig. 14.16. Fibrillar deformation zone at a crack tip in a bulk specimen of semicrystalline high-density polyethylene deformed at room temperature (thin section stained with RUO4).

Figure 23. Morphology of rat aortic smooth muscle cells 48 h after seeding on high-density (A, C, E) and low-density (B, D, F) polyethylene. A, B pristine polymers, C, D plasma-irradiated polymers, E, F polymers irradiated with plasma and subsequently grafted with glycine. Cell membrane stained with Texas Red C2-maleimide, the nuclei counterstained withHoechst 33342. Olympus IX 50 microscope, digital camera DP 70. Bar=200 pm.

A new, low volatility antioxidant, Naugard 492 is a candidate for many food-contact applications. Naugard 492, a phenolic phosphite, not only offers low volatility, but is economical, non-staining and non-discoloring. Applications include polypropylene, high emd low density polyethylene, high izipact polystyrene and ABS. 

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