AI SearchEffect of furnish variables and storage conditions on AKD sizing stability
Call Number: AIT Thesis no.PP-00-9 Material type:
SeriesSeries: Asian Institute of Technology. Thesis ; no. PP-00-9Publication details: Bangkok : Asian Institute of Technology, 2000Description: 43 leavesSubject(s): Online resources: Dissertation note: Thesis (M.Sc.) - Asian Institute of Technology, 2000 Summary: Mills using AKD as an internal s1zmg agent in conjunction with precipitated calcium carbonate as filler experience a loss of paper's resistance to liquid penetration with time. In this study some factors affecting this sizing loss, such as filler type, pH of stock, and storage conditions of sized paper were studied. Cobb test was used to determine and follow the development of water resistance of the AKD sized laboratory handsheets. It was found that the initial degree of sizing was critical. If the paper was sufficiently sized, no reversion occurred. High AKD addition can prevent size reversion due to any of the studied variables. AKD was an efficient sizing agent in the absence of filler. When filler was added, sizing performance of paper was suffered. Precipitated Calcium Carbonate (PCC) need lower amount of AKD than Ground Calcium Carbonate (GCC) to get adequate sizing. However, if it was not sized sufficiently, size reversion was higher and faster than GCC. High pH of stock and tropical climate boost size reversion at high PCC loading levels. But the effect was small at low addition level. The effect was also less with GCC filled handsheets.
| Cover image | Item type | Current library | Home library | Collection | Shelving location | Call number | Materials specified | Vol info | URL | Copy number | Status | Notes | Date due | Barcode | Item holds | Item hold queue priority | Course reserves | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
20-AIT Publication
|
Asian Institute of Technology Library AIT Publications | AIT Thesis no.PP-00-9 (Browse shelf(Opens below)) | 1 | Available | 30050120650592 | |||||||||||||
40-Archives
|
Asian Institute of Technology Library Archives | AIT Thesis no.PP-00-9 (Browse shelf(Opens below)) | Available | 30050160026158 |
A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science
Thesis (M.Sc.) - Asian Institute of Technology, 2000
Mills using AKD as an internal s1zmg agent in conjunction with precipitated calcium carbonate as filler experience a loss of paper's resistance to liquid penetration with time. In this study some factors affecting this sizing loss, such as filler type, pH of stock, and storage conditions of sized paper were studied. Cobb test was used to determine and follow the development of water resistance of the AKD sized laboratory handsheets. It was found that the initial degree of sizing was critical. If the paper was sufficiently sized, no reversion occurred. High AKD addition can prevent size reversion due to any of the studied variables. AKD was an efficient sizing agent in the absence of filler. When filler was added, sizing performance of paper was suffered. Precipitated Calcium Carbonate (PCC) need lower amount of AKD than Ground Calcium Carbonate (GCC) to get adequate sizing. However, if it was not sized sufficiently, size reversion was higher and faster than GCC. High pH of stock and tropical climate boost size reversion at high PCC loading levels. But the effect was small at low addition level. The effect was also less with GCC filled handsheets.
There are no comments on this title.