Gamma射線照射聚合之雙層網狀水膠破壞力學性質量測

Investigation of Fracture Properties of Gamma-Ray Polymerized Double-Network Hydrogels

何銘華(Ming-Hua He) ； 林耀祺(Yao-Qi Lin) ； 劉乃上(Nai-Shang Liou) ； 林鴻儒(Hong-Ru Lin) ； 阮國維(Guo-Wei Ruan)

《科儀新知》 182期 (2011/06) Pp. 21-30

https://doi.org/10.29662/IT.201106.0003

摘要

水膠的名稱源於其超強的吸水性，水膠在本質上為機械強度不高的材料，但由於其含水量與生物相容性高之故，生醫水膠材料在臨床上已經有多年的應用經驗。近年由於高強度水膠材料不斷被開發，讓水膠在生醫方面之應用已愈來愈多元化，目前開發的高強度水膠除了含水量高之外，亦有摩擦係數低等特性，因此有被應用於置換椎間盤核髓等受力軟組織之潛力，進而使得高強度水膠等生醫材料的機械性質有進一步被深入探討的必要。本文對以異丙基丙烯醯胺及丙烯酸為單體，使用Gamma射線照射所製備的高機械強度雙層綱狀水膠之破壞力學性質進行探討。為了對相關水膠材料之破壞力學性質進行量測與分析，在研究過程中發展結合數值／實驗方法的J積分估算法則，對具有不同交聯劑濃度的水膠之破壞力學特性進行探討與分析。

並列摘要

Hydrogels derive their name from their super absorbent natural. Hydrogels have inherently weak mechanical strength. However, the advantages of bio-compatibility and hydrophilicity make hydrogels become biomaterials for many biomedical applications. New developed high strength hydrogels have the potential to be used as artificial nucleus pulposus replacement in the cervical disk due to the properties of low friction and high mechanical strength These potential applications necessitate closer investigation of mechanical properties of the candidate high strength hydrogels. In this study, a hybrid numerical/experimental J-integral method was developed to quantify fracture parameters of gamma ray synthesized high strength hydrogels.