The absorptivity of TPP and TBP-A were very high.However,the limiting oxygen index(LOI) value of the treated fiber remained at 25.9% when the absorptivity of TBP-A increased over 4.38%.

• 聚乳酸纤维对TPP和TBP-A的吸收率最高；但对TBP-A的吸收率超过4.；38%25时；聚乳酸纤维的极限氧指数仍保持在25