Comparison of microstickies measurement methods. Part II, Results and discussion

Abstract

In part I of the article we discussed sample preparation procedure and described various methods used for the measurement of microstickies. Some of the important features of different methods are highlighted in Table 1. Temperatures used in the measurement methods vary from room temperature in some cases, 45 °C to 65 °C in other cases. Sample size ranges from as low as 0.25 g to as high as 50 g. The working definition of microstickies, material passing through 150 μm or 100 μm slotted screen, is used in this study. Of the eight methods listed in Table 1, COD Method, PMV Microstickies Method and SCA Solvent Extraction Method employ slotted screen fractionation step. Two of the eight methods, namely Rotating-Wire-Mesh-Analyzer and Polyethylene Film Method, do not use fractionation step. UCM Deposition Test and Paprican’s Thermogravimetric Test use 200-mesh screen (75 μm opening) for fractionation. IPST Method measures particles smaller than 25 μm and with molecular weight greater than 5,000 Dalton.

Citation

Doshi, Mahendra R.; Blanco, Angeles; Negro, Carlos; Monte, Concepcion; Dorris, Gilles M.; Castro, Carlos C.; Hamann, Axel; Haynes, R. Daniel; Houtman, Carl; Scallon, Karen; Putz, Hans-Joachim; Johansson, Hans; Venditti, R. A.; Copeland, K.; Chang, H.-M. 2003. Comparison of microstickies measurement methods. Part II, Results and discussion. Progress in paper recycling. Vol. 13, no. 1 (Nov. 2003): p. 44-53.