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Sampleswere fabricated by casting a single layer of 25 mm thick polypropylene (TF-225-4, Premier Lab Supply, Inc., Port St Lucie, FL, USA) in a vacuum oven at 2008C into a 20 mm thick polycarbonate filter (Isopore, Millipore, Inc., Billerica, MA, USA) containing 0.6 mm diameter pores. The polycarbonate filter was etched in methylene chloride, and resulting samples were rinsed in isopropyl alcohol and air-dried.Flat control sampleswere produced by processing the 25 mm thick polypropylene film as above except without the use of the filter. |
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2Â¥2008-10-17 19:45:28
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3Â¥2008-10-17 20:43:36
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Samples were fabricated by casting a single layer of 25 mm thick polypropylene (TF-225-4, Premier Lab Supply, Inc., Port St Lucie, FL, USA) in a vacuum oven at 2008C into a 20 mm thick polycarbonate filter (Isopore, Millipore, Inc., Billerica, MA, USA) containing 0.6 mm diameter pores. The polycarbonate filter was etched in methylene chloride, and resulting samples were rinsed in isopropyl alcohol and air-dried. Flat control samples were produced by processing the 25 mm thick polypropylene film as above except without the use of the filter. ͨ¹ýÔÚÕæ¿Õ¯Öм°200¡æÏ½«25 mmºñµÄ¾Û±ûÏ©£¨TF-225-4, Premier Lab Supply¹«Ë¾£¬ Port St Lucie, FL, USA£©Í¶Èë20 mmºñ²¢º¬ÓÐ0.6 mmÖ±¾¶¿×µÄ¾Û̼ËáÑÎÂËÆ÷(Isopore, Millipore¹«Ë¾£¬ Billerica, MA, USA)ÖÐÀ´ÖÆÔìÑùÆ·¡£ ÔÚ¶þÂȼ×ÍéÖÐÊ´¿Ì¾Û̼ËáÑÎÂËÆ÷£¬ÇÒÓÃÒì±û´¼³åÏ´ËùµÃÑùÆ·²¢½«Æä·ç¸É¡£ ͨ¹ý¸ù¾ÝÉÏÊö·½·¨´¦Àí25 mmºñµÄ¾Û±ûÏ©±¡Ä¤£¨µ«²»Ê¹ÓÃÂËÆ÷£©À´ÖÆÔìÆ½Ì¹¶ÔÕÕÑùÆ·¡£ |
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