- Implementation of enzymatically medified starch for surface sizing of paper:
Enzymatically modified maize and tapioca starch gave equivalent surface properties to paper as compared to oxidised starch in various paper mills for cost reduction. |
- Optimization of alkaline sizing to reduce sizing cost (IPMA sponsored):
Sizing properties were more stable using agro residues as compared to hardwood even at low dosage of sizing agents with all fillers. |
- Development of high ash paper to reduce fiber input as well as cost (IPMA sponsored):
Split addition of dry strength additives to filler and wet end was beneficial to increase ash in paper without affecting strengh properties of different furnishes. |
- Development of alkaline sizing process in laboratory using ASA:
The porcess for ASA emulsification was established in lab resulting in lower amount of cationic starch. |
- Development of suitable indigenous cationic starch for ASA emulsion:
Developed the process for ASA emulsification using indigenous starches to reduce sizing cost. |
- Development of highly opaque paper using various fillers alone and in combination with extenders:
Significant increase in opacity of paper could be achieved with filler extenders in combination with talc. |
- Efficacy of optical whitening agent and tinting dyes to achieve target optical properties of different pulps:
- The superior brightness and whiteness in different grades of paper was achieved through selective use of OBA with cost effectiveness.
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- Studies on ink feathering in writing and printing paper:
ASA sizing was found much better than AKD sizing as the former provided no ink feathering in paper even at very high Cobb60 values and ash laves. |
- Estimation of bound and unbound ASA in alkaline ASA sized papers ( BILT sponsored):
Quantitative analysis of bound and unbound ASA was done. Bound portion was less than unbound portion of ASA with fiber. |
- Fiber modification with enzymes (IPMA sponsored):
Reduction in refining energy and improvement in drainage was achieved by enzymatic pretreatment of pulp. |