Daisy A Sriwendari, Edwin K Sijabat / JBAT 9 (2) (2020) 126-134
there is a difference in the structure of each stock variation. The more visible morphology is fiber from pulp secondary fiber (wood fiber) pulp, whereas the BNC morphology is not visible in stock. This is because the BNC size is far smaller than the size of the wood fiber itself. But as the BNC composition used is added, the stock looks denser and clots (flocculation). This is because the non-branched glucose chain makes a long fibrillar structure, because of the high number of free hydroxyl groups that produce extensive intra and intermolecular hydrogen bonds between adjacent chains (Brown, 1985).
ACKNOWLEDGEMENT
The authors gratefully acknowledge the research funding granted by Beasiswa Ikatan Dinas Sinarmas (APP) as part of the undergraduate program of the Department of Vocational, Pulp and Paper Processing, Instittut Teknologi dan Sains Bandung (ITSB).
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CONCLUSION
The conclusions drawn from this study are BNC can be used as the environmentally friendly alternative source of cellulose in making liner test paper because it does not require a delignification process which is generally found in the process of making paper from wood cellulose. There is an increase in strength properties handsheet trial using bacterial nano cellulose without additional PAC and cationic retention compared to the strength properties handsheet blanko with additional PAC and cationic retention. Therefore BNC can be used as a raw material and can reduce the use of chemical additive. BNC can be applied to surface sizing solutions to further improve paper strength properties as the substitute for surface sizing agent. The quality of paper produced by mixing recycle waste paper and BNC as raw material for liner test paper as a whole increases the strength properties of the test liner trial paper. The use of BNC has an impact on decreasing basis weight handsheet, but paper strength properties such as ring crush index, concora index, bursting index, and ply bonding have increased along with the increase in BNC composition in, as well as in the use of BNC in surface sizing solution. The porosity and cobb size values increase with increasing BNC composition in the handsheet. Thus the paper absorption properties is considered not good, because the trial result underwent an increase from the blanko. The BNC composition of 30% (trial 6) achieved the highest value for paper strength properties, both with he composition of BNC 30% (trial 6), is the highest value for paper strength properties, both without surface sizing coating or with surface sizing coating.
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