水分含量对猪鼻中隔软骨焓松弛的影响。
Effect of Water Content on Enthalpic Relaxations in Porcine Septal Cartilage.
作者信息
Chae Y, Protsenko D, Lavernia E J, Wong B J F
机构信息
The Beckman Laser Institute, 1002 Health Sciences Rd., Irvine, CA 92612, USA.
Department of Chemical Engineering and Materials Science, University of California, Davis, One Shields Avenue, Davis, CA 92697, USA.
出版信息
J Therm Anal Calorim. 2009 Mar 1;95(3):937-943. doi: 10.1007/s10973-007-8782-4.
Cartilage thermoforming is an emerging surgical technology which uses heat to accelerate stress relaxation in mechanically deformed tissue specimens. Heat induced shape change in cartilage is associated with complex thermo mechanical behavior of which the mechanisms are still a subject of debate. Differential scanning calorimetry (DSC) was used to characterize the threshold temperatures and enthalpies in cartilage as a function of water content. The DSC identified two enthalpic events in porcine nasal septal cartilage, which depend on the water content. The change in the water content of cartilage impacts the interactions between matrix macromolecules and water molecules, which may be associated with a bound-free water transformation (reversible process) and a denaturation of cartilage (irreversible process).
软骨热成型是一种新兴的外科技术，它利用热量来加速机械变形组织样本中的应力松弛。软骨中热诱导的形状变化与复杂的热机械行为相关，其机制仍是一个有争议的话题。差示扫描量热法（DSC）被用于表征软骨中作为水分含量函数的阈值温度和焓。DSC确定了猪鼻中隔软骨中的两个焓变事件，这取决于水分含量。软骨水分含量的变化会影响基质大分子与水分子之间的相互作用，这可能与束缚水-自由水转变（可逆过程）和软骨变性（不可逆过程）有关。
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