CAJ | 학술논문

背景：形状记忆聚合物是一类新型功能材料，在生物医疗领域的潜在应用前景逐步受到人们的重视。目的：综述形状记忆聚合物的特性及其应用现状。方法：通过SpringerLink数据库、中国期刊全文数据库等检索数据库搜索近年来有关形状记忆聚合物的研究内容。结果与结论：形状记忆聚合物是一种新型的智能材料，与形状记忆合金及形状记忆陶瓷相比，它具有密度低、质量轻、成本低、形状回复率高、形状记忆温度易于调节、易于着色、形变量大、赋形容易且易于在预定温度下被激发等优点。特别是形状记忆聚氨酯，具有结构-性能易于控制、形状记忆温度选择范围宽(-30-70℃)、生物相容性良好等优点，因而在生物医学领域具有广阔的应用前景。但目前已开发的形状记忆聚合物普遍综合性能不够理想，如聚降冰片烯虽然形变回复力大、形变速度快、回复精度高，但形状回复温度可调节范围小，相对分子质量太大，分子链较长，成型加工较为困难等。另外，多数形状记忆聚合物形状回复力小，回复速度较慢，回复精度低，重复记忆效果不够理想，机械强度和化学耐久性还不够好。因此，利用分子设计和材料改性技术优化其形状记忆功能，努力提高其综合性能，是今后形状记忆聚合物研究和发展的关键。
배경：형상기억취합물시일류신형공능재료，재생물의료영역적잠재응용전경축보수도인문적중시。목적：종술형상기억취합물적특성급기응용현상。방법：통과SpringerLink수거고、중국기간전문수거고등검색수거고수색근년래유관형상기억취합물적연구내용。결과여결론：형상기억취합물시일충신형적지능재료，여형상기억합금급형상기억도자상비，타구유밀도저、질량경、성본저、형상회복솔고、형상기억온도역우조절、역우착색、형변량대、부형용역차역우재예정온도하피격발등우점。특별시형상기억취안지，구유결구-성능역우공제、형상기억온도선택범위관(-30-70℃)、생물상용성량호등우점，인이재생물의학영역구유엄활적응용전경。단목전이개발적형상기억취합물보편종합성능불구이상，여취강빙편희수연형변회복력대、형변속도쾌、회복정도고，단형상회복온도가조절범위소，상대분자질량태대，분자련교장，성형가공교위곤난등。령외，다수형상기억취합물형상회복력소，회복속도교만，회복정도저，중복기억효과불구이상，궤계강도화화학내구성환불구호。인차，이용분자설계화재료개성기술우화기형상기억공능，노력제고기종합성능，시금후형상기억취합물연구화발전적관건。
BACKGROUND:Shape memory polymer is a new type of functional material. The applications of shape memory polymers in the biomedical field have increasingly been paid close attention. OBJECTIVE: To summarize the characteristics and applications of shape memory polymers. METHODS: SpringerLink and China Journal Ful text Database were searched for articles related to shape memory polymers. RESULTS AND CONCLUSION: As a new type of inteligence material, shape memory polymers have lots of advantages compared with shape memory aloy and shape memory ceramics, such as low density, light weight, low cost, high shape-recovery rate, easy to regulate the shape memory temperature, to dye, to shape and to be stimulated under expected switch temperature. Especialy for polyurethane, the structure-property relationships are extremely easy to control, the shape memory temperature can be set in a wide range from-30℃ to 70℃, and it has the biocompatibility. Due to these, shape memory polymers have great potentials in applications of biomedical engineering. But the comprehensive properties of the developed shape memory polymers are not satisfactory. For example, the polynorbornene has big recovery stress, fast recovery velocity and high recovery precision, but its relative molecular mass is very big, the molecularchain is long, and processing is difficult. Furthermore, most of shape memory polymers have smal recovery stress, slow recovery velocity, low recovery precision and unsatisfied repeat memory effect. The key problems for shape memory polymers include optimization of the function of shape memory and improvement of the comprehensive properties based on the technologies of molecular design and material modification.