tiket kereta toko bagus berita bola terkini anton nb Aneka Kreasi Resep Masakan Indonesia resep masakan menghilangkan jerawat villa di puncak recepten berita harian game online hp dijual windows gadget jual console voucher online gosip terbaru berita terbaru windows gadget toko game cerita horor

EFFECT OF PARTICLE SIZE OF MAGNESIUM SILICATE (TALC) FILLER ON STRUCTURAL AND OPTICAL PROPERTIES OF PAPER

Nishi Kant Bhardwaj

Abstract


The magnesium silicate (talc) fillers of five different particle size distribution (PSD) and platy shape were used in papermaking along with two calcium carbonate fillers vis., ground calcium carbonate (GCC) and precipitated calcium carbonate (PCC). The GCC was the finest filler with the rhombohedral shape while PCC was coarser than GCC and having scaleohedral shape. The paper sheets were prepared from all fillers with the target ash in paper ranging from 14 to 24%. The effect of PSD, shape and increasing ash on optical and structural properties of paper has been studied. The cationic and anionic polyacrylamide retention aid chemicals were used with talc and calcium carbonate fillers, respectively, to retain them within paper matrix. The retention of talc filler in paper was higher than that of GCC due to the coarser particle size and platy shape of the former. The retention of scalenohedral PCC was comparatively higher than that of rhombohedral GCC. The bulk, light scattering, opacity, porosity and roughness of paper with talc filler were lowest and those with PCC were highest among all fillers.


Full Text: PDF

Refbacks

  • There are currently no refbacks.