The effect of adding pineapple leaf fiber (Ananas comosus (L.) Merr) to heat-cured type acrylic resin on impact strength tests

Background: Heat-cured acrylic resin is a type of acrylic resin whose polymerization process is done by heating. Several methods have been used to improve the properties of acrylic resin materials, one of which is by adding natural fiber and using pineapple leaf fiber as a natural fiber to strengthen heat-cured acrylic resin in impact strength tests. Objective: To determine the impact strength of acrylic resin, with the addition of Pineapple leaf fiber and without the addition of Pineapple leaf fiber. Research Method: This research uses laboratory experimental research. The sampling method used 16 samples per group, consisting of 2 groups, namely the control group (acrylic resin without the addition of Pineapple leaf fiber) and the treatment group (acrylic resin with the addition of Pineapple leaf fiber). Test the impact strength using the Universal impact tester machine (joule). The test result data was analyzed using the independent T-test (Sig < 0.05). Results: The highest mean impact test value was in the treatment group (acrylic resin with the addition of Pineapple leaf fiber) at 4.22 Joules, while the lowest mean value was in the control group (acrylic resin without the addition of Pineapple leaf fiber) at 1.45 Joules. Based on data analysis, sig = 0.000 (< 0.05), which means there is a difference in the impact strength value of acrylic resin with the addition of Pineapple leaf fiber and without the addition of Pineapple leaf fiber. Conclusion: There is an effect of adding pineapple leaf fiber to heat-cured acrylic resin.