Author/Authors :
OTHMAN, ROHAYA Pusat Penyelidikan Mineral - Jabatan Mineral dan Geosains Malaysia, Malaysia , ZAKARIA, SARANI Universiti Kebangsaan Malaysia - Pusat Pengajian Fizik Gunaan, Malaysia , CHIA, CHIN-HUA Universiti Kebangsaan Malaysia - Pusat Pengajian Fizik Gunaan, Malaysia , ZURIYATI, AINUN Universiti Putra Malaysia - Produk Hutan (INTROP) - Institut Perhutanan Tropika dan, Malaysia , ISA, NASHARUDDIN Pusat Penyelidikan Mineral - Jabatan Mineral dan Geosains Malaysia, Malaysia
Abstract :
Precipitated calcium carbonate fillers were loaded into the lumen of bleached mixed tropical hardwood pulp using polyethylenimine (PEI) and alum. Our results indicated that the addition of (PEI) increased the degree of loading of precipitated calcium carbonate (PCC) into the lumen of fibers. The degree of loading also increased with the addition of alum together with PEI. The mechanical strengths of the produced lumen loaded paper increased with the addition of PEI and alum. Meanwhile the mechanical strength without alum had slightly increased the mechanical strengths of the paper. Electron micrographs revealed that the PCC fillers were successfully loaded into the lumen of the fibers
Keywords :
Lumen loading , mechanical properties , optical properties , recipitated calcium carbonate , polyethylenimine
