{'fraction_non_alphanumeric': 0.023065476190476192, 'fraction_numerical': 0.0, 'mean_word_length': 5.466346153846154, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Enhanced Mechanical Stability and Biodegradability of Ti-infiltrated PLA.

Biodegradable polymers have been often used in place of conventional non-degradable polymers for industrial and medical applications. In particular, polylactide (PLA) has been regarded as a popular eco-friendly plastic and have many advantages like good biocompatibility, and processability. Yet, it still has some drawbacks in mechanical properties. Here, we prepared Ti-infiltrated PLA by mimicking the gelatinous jaw of a seaworm whose mechanical properties are toggled up and down by the tiny amount of metal ion, expecting to prepare a new type of alternative. The Ti induced significant chemical and microstructural changes in the PLA, which led to a notable improvement in the mechanical properties as compared to the neat PLA. The Ti-infiltrated PLA exhibited high resistance to rapid degradation. More importantly, the toxicity assessment demonstrated that the resulting PLA is still biocompatible and non-toxic. Consequently, we proved that the Ti-infiltrated PLA has high mechanical properties comparable to conventional non-degradable polymers and good biocompatibility as well as delayed biodegradability. We anticipate the current Ti-infiltrated PLA to be an eco-friendly replacement of some conventional plastics, helping to preserve a green environment.