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008 171206s2011 th uu m rtt 0| a1eng d
035 _a.b12195972
099 9 _aAIT Thesis no.PP-11-06
100 1 _aWahyudi, Ferdian Alam
245 1 0 _aOptimizing filler retention of mixed tropical hardwood based uncoated fine paper
260 _aPathum Thani, Thailand :
_bAsian Institute of Technology,
_c2011
300 _a52 leaves :
_bill.
490 1 _aThesis ;
_vno. PP-11-06
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Pulp and Paper Technology, School of Environment, Resources & Development
502 _aThesis (M. Eng.) - Asian Institute of Technology, 2011
520 _aThe objectives of this study was to evaluate the effects of different filler loading method, variation retention aid dosage and different structure of CPAM on furnish retention and drainage, with the aim of finding an effective process to improve filler share in fine paper without loss in strength. Mixed tropical hardwood pulp from Sumateran forest, blending PCC {u2013} GCC filler and broke from APRIL were used as the main furnish components of the handsheet. It was observed that pre - flocculation of fillers wisth c ationic starch or CPAM resulted in higher strength, but retarded drainage and slightly detiorated the formation. The retention was slightly low compare to conventional filler addition method. It was also observed that addition of two cationic polyelectrolytes for bringing the system zeta potential to the iso electric point is not required. In addition, a single cationic polyelectrolytes could indeed do the job. The effects of microparticles and Nanoparticles on retention system were also evaluated. Nanoparticles system had strong positive effects on drainage and retention, but detiorated formation, strength and optical properties. In contrast, microparticles system had ability develop better formation, strength and optical properties, but lower on drainage and retention. The morphological structure differences of CPAM were also examine. It was observed with that linear or dispersion polymer had no effect on polymer absorption potential. Long and linear CPAM polymer increase drainage as well as retention. The structured dispersion polymer, however, showed higher strength. In addition, the overall effects of CPAM either linear or structured on formation were negative
650 0 _aHardwoods
_zIndonesia
650 0 _aPaper
_xQuality
700 1 _aNazhad, Mousa M.,
_eChairperson
700 1 _aBasta, Jiri,
_eExamination committee
700 1 _aLehtinen, Esa,
_eExamination Committee
710 2 _aAsia Pacific Holding Ltd. (APRIL) Indonesia,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. PP-11-06
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B20547
907 _a.b12195972
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_vn
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