English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This study aims to determine the influence of the amount of Ag2SO4 silver sulfate catalyst and amount of time on the degree of sulfonation in waste-based Styrofoam (polystyrene) into Poly-Styrene Sulfonic Acid (PSSA). The method used is sulfonation with sulfuric acid H2SO4 as a sulfonating agent. Based on the research, the sulfonation reaction was successfully carried out, which was shown by the functional group in the FTIR test and the highest degree of sulfonation achieved was 67.6%, which come from variation amount of 2% Ag2SO4 catalyst and 25 minutes of reaction time.

iop conference series. materials science and engineering

The influence of the amount of catalyst on the degree of sulfonation in the sulfonation process on waste-based Styrofoam (polystyrene) into Poly-(Styrene Sulfonic Acid)