High ammonia NR latex with 60% total solid content was purchased from Zarm Scientific and Supplies
(Malaysia) Sdn Bhd. Sago starch was manufactured by Sago Link Sdn Bhd. Potassium hydroxide by Merck Sdn
Bhd. Anchoid, antioxidant, zinc oxide (ZnO), zinc diethyldithiocarbamate (ZDEC) and sulphur dispersions were
supplied by HH Saintifik Enterprise Sdn Bhd and were used as received.