03661nas|a2200493 i 4500 20260818094143.0 030124s2002 th u m rtt 00| a1eng d .b11874892 AIT Thesis no.PP-02-2 Wen, Xiangfeng Drainability and retention properties of acacia based fine paper Bangkok : Asian Institute of Technology, 2002 53 leaves Thesis ; no. PP-02-2 Thesis (M.Eng.) - Asian Institute of Technology, 2002 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. In this study, acacia (Acacia mangium) and mixed tropical hardwood (MTH) pulps from Indonesia were compared to birch (Betula pendula & pubesceus) pulp from Scandinavia, to obtain the potential dewatering, retention properties at web forming and related handsheets prope1ties of these pulps for fine paper. Drainability and retention properties of these hardwoods pulps are compared at the constant tensile strength level. Schopper-Riegler device, drainage time, water retention value, high pressurized dewatering in handsheet mold and Moving Belt Former (MBF) are used to study the drainage properties. Acacia is proved superior in light-scattering ability and formation, higher filler-retention ability that are critical quality requirements for fine paper. The drawbacks are acacia's low drainage rate and low wet web strength, which are bottleneck to the high paper machine speed especially at the web forming. Birch has the much faster drainage rate, highest solids content and low retention properties at the same tensile strength level. MTH is morphologically close to birch, but most of its properties fall between acacia and birch. Acacia and birch are the suitable hardwoods for fine paper though there are further improvements needed. Acacia is a promising raw material if the drainage properties can be improved fmther. Acacia Hardwoods Paper Retulainen, Elias, Chairperson Nazhad, Mousa M., Examination Committee Ruhanen, Mauno, Examination Committee Goverrunent of Finland;Asian Institute of Technolog, Scholarship Donor Asian Institute of Technology. Thesis ; no. PP-02-2 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B07363 .b11874892 mnait u 240403 0 030124 m a u 0 mnait mnait mnait mnait mnarc 20 22 40 Barcode : 30050120932990 CREATED : 2003-01-24 RECORD # : i12313750 LPATRON : 1021987 LCHKIN : 2010-05-04 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 6 TOT RENEW : 0 Barcode : 30050120685333 CREATED : 2014-05-21 RECORD # : i12801884 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160025754 CREATED : 2016-03-18 RECORD # : i12898181 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121018054 CREATED : 2020-08-28 RECORD # : i13291270 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121018070 CREATED : 2020-08-28 RECORD # : i13291282 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 31547 31547 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.PP-02-2 30050120932990 2026-08-18 09:41:43 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.PP-02-2 30050120685333 2026-08-18 09:41:43 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.PP-02-2 30050160025754 2026-08-18 09:41:43 2026-08-18 40 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no.PP-02-2 30050121018054 2026-08-18 09:41:43 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no.PP-02-2 30050121018070 2026-08-18 09:41:43 4 2026-08-18 20