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Journal articles
Magazine articles
Open Access
Surface modification of TiO2 with MPS and its effects on the wettability and physical properties of Kawayan Kiling (Bambusa vulgaris Schrad ex. Wendl) handsheets, TAPPI Jouranl April 2024

ABSTRACT: The need for hydrophobic papers has steadily increased over past years. These papers are often sought after as packaging materials and have high demand in the food industry and medicine. In this study, various concentrations of surface-modified TiO2-MPS were added to Kawayan Kiling (B. vulgaris) pulp at the wet-end section of handsheet formation. Surface-modified TiO2-MPS was made from nano-titanium (IV) oxide using 3-(trimethoxysilyl)propyl methacrylate as a coupling agent. The wettability of handsheets and physical properties were tested using various standard methods. Results reveal that the handsheets without surface-modified TiO2-MPS had the lowest water contact angle (WCA), while the handsheet with 12.34% (w/w) surface-modified TiO2-MPS had the highest WCA. At 17% (w/w) surfacemodified TiO2-MPS, the WCA rapidly declined. Handsheets with surface-modified TiO2-MPS have a rougher surface compared to the handsheets without chemicals and handsheets with unmodified TiO2. This roughness made the handsheet hydrophobic. The handsheet with 12.34% (w/w) unmodified TiO2 has a smoother surface than the control handsheet. Energy-dispersive X-ray spectroscopy (EDS) analysis shows that the handsheet with 12.34% (w/w) unmodified TiO2 contained titanium, while the handsheet with 12.34% (w/w) surface-modified TiO2-MPS contained both titanium and silicon. Generally, the physical properties of handsheets improved with surface-modified TiO2- MPS, especially grammage, bulk thickness, tensile index, and water absorptiveness, which showed statistically significant differences across treatments. The tear index did not differ between treatments.

Journal articles
Magazine articles
Open Access
Convolutional neural networks enhance pyrolysis gas chromatography mass spectrometry identification of coated papers, TAPPI Journal August 2024

ABSTRACT: In the evolving paper industry, accurate identification of coated paper components is essential for sustainability and recycling efforts. This study employed pyrolysis-gas chromatography mass spectrometry (Py-GCMS) to examine six types of coated paper. A key finding was the minimal interference of the paper substrate with the pyrolysis products of the coatings, ensuring reliable analysis. A one-dimensional convolutional neural network (1D-CNN) was employed to process the extracted ion chromatograms directly, simplifying the workflow and achieving a predictive accuracy of 95.2% in identifying different coating compositions. Additionally, the study high-lighted the importance of selecting an optimal pyrolysis temperature for effective feature extraction in machine learning models. Specific markers for coated papers, including polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polybutylene succinate (PBS), polylactic acid (PLA), and waterborne polyacrylates (WP), were identified. This research demonstrates a novel approach to coated paper identification by combining Py-GCMS with machine learning, offering a foundation for further studies in product quality and environmental impact.

Magazine articles
Open Access
1998 tappi pulping conference, TAPPI JOURNAL, March 1999, Vo

1998 tappi pulping conference, TAPPI JOURNAL, March 1999, Vol. 82(3)

Magazine articles
Open Access
Chromizing for near-drum corrosion protection, TAPPI JOURNAL, September 1999, Vol. 82(9)

Chromizing for near-drum corrosion protection, TAPPI JOURNAL, September 1999, Vol. 82(9)

Magazine articles
Open Access
The 11th fundamental research symposium investigates papermaking materials, TAPPI JOURNAL, February 1998, Vol. 81(2)

The 11th fundamental research symposium investigates papermaking materials, TAPPI JOURNAL, February 1998, Vol. 81(2)

Magazine articles
Open Access
PIMA and tappi form alliance for paper industry education, TAPPI JOURNAL, February 1998, Vol. 81(2)

PIMA and tappi form alliance for paper industry education, TAPPI JOURNAL, February 1998, Vol. 81(2)

Magazine articles
Open Access
On management: energy and the pulp and paper industry - how will electric utility deregulation affect You?, TAPPI JOURNAL, March 1998, Vol. 81(3)

On management: energy and the pulp and paper industry - how will electric utility deregulation affect You?, TAPPI JOURNAL, March 1998, Vol. 81(3)

Magazine articles
Open Access
Adding value: industry trend reflects shift in customer/supplier relationships, TAPPI JOURNAL, May 1998, Vol. 81(5)

Adding value: industry trend reflects shift in customer/supplier relationships, TAPPI JOURNAL, May 1998, Vol. 81(5)

Magazine articles
Open Access
Contributing causes and risk reduction of crevice corrosion, TAPPI JOURNAL, November 1998, Vol. 81(11)

Contributing causes and risk reduction of crevice corrosion, TAPPI JOURNAL, November 1998, Vol. 81(11)

Magazine articles
Open Access
English as a first and second language - part 6: avoiding grammar traps, TAPPI JOURNAL, September 1998, Vol. 81(9)

English as a first and second language - part 6: avoiding grammar traps, TAPPI JOURNAL, September 1998, Vol. 81(9)

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