功能材料, 2011, 42(6): 996-1000.
四类关节软骨修复材料的摩擦学性能对比研究
罗小兵 1, , 张利 2, , 王妍瑛 3,二醇(PEG-NH2)和氨基聚乙二醇单甲醚(MPEG-NH2)为大分子引发剂,制备了三嵌段(ABA)和两嵌段(AB)的聚L-丙氨酸-聚乙二醇嵌段共聚物;利用圆二色光谱(CD)研究了共聚物在溶液中的二级结构及其影响因素.结果表明,在水溶液中嵌段共聚物主链主要以α-螺旋构象存在;在一定范围内,α-螺旋含量随共聚物溶液浓度的增大而增大,随溶液离子强度的增大而降低;相同条件下,AB型共聚物在溶液中的α-螺旋含量比ABA型共聚物高.","authors":[{"authorName":"张国林","id":"859a32d1-223c-4fdc-b05a-74050b23f6e8","originalAuthorName":"张国林"},{"authorName":"马建标","id":"d0cdc6e9-1e5c-402d-9443-624c45503e82","originalAuthorName":"马建标"},{"authorName":"王亦农","id":"5d8f48e1-6543-4043-9c3e-67ec9ed05f98","originalAuthorName":"王亦农"}],"doi":"","fpage":"159","id":"b5fe25bf-3cd3-4e22-9ac5-fbd8d2cd1082","issue":"3","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"f3e1189a-6cce-4769-9679-861369428c25","keyword":"聚氨基酸","originalKeyword":"聚氨基酸"},{"id":"70454d63-a0ea-4c03-a854-810222aaedcb","keyword":"嵌段共聚物","originalKeyword":"嵌段共聚物"},{"id":"b2e45300-424c-49c5-95cc-5e953290c9fb","keyword":"二级结构","originalKeyword":"二级结构"},{"id":"485d08b8-3c3c-469b-8725-75c366c76170","keyword":"α-螺旋","originalKeyword":"α-螺旋"}],"language":"zh","publisherId":"gfzclkxygc200603040","title":"聚L-丙氨酸-聚乙二醇嵌段共聚物溶液的二级结构","volume":"22","year":"2006"},{"abstractinfo":"利用L-丙氨酸和三聚光气反应制备了N-羧基-丙氨酸-环内酸酐(NCA).以聚乙二醇单甲醚(MPEG)为原料,制备了端氨基聚乙二醇单甲醚(MPEG-NH2),并以此作为大分子引发剂,引发NCA开环聚合,合成了不同含量的聚L-丙氨酸-聚乙二醇嵌段共聚物(PLAM).利用IR、NMR、DSC等方法对共聚物结构进行了表征,同时利用圆二色光谱(CD)考察了聚合物材料在水溶液中的二级结构.结果表明,MPEG-NH2引发NCA开环聚合得到的是嵌段共聚物,CD测试结果表明共聚物在水溶液中主链以α-螺旋构象存在,聚L-丙氨酸分子中引入亲水性聚乙二醇单甲醚能够改善材料的亲水性能.","authors":[{"authorName":"张国林","id":"518bcaea-59c7-4b93-9417-a61693533835","originalAuthorName":"张国林"},{"authorName":"马建标","id":"7dbc5489-0daa-416d-b6a5-95cc629a1d7a","originalAuthorName":"马建标"},{"authorName":"王亦农","id":"5146f97e-9ec9-4e94-9814-c47fcd0869a0","originalAuthorName":"王亦农"}],"doi":"","fpage":"50","id":"a4e6bd46-00d0-46ba-a907-e84d456487fc","issue":"3","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"e44c08f7-1271-4f2c-a38f-b0616545fc20","keyword":"聚L-丙氨酸","originalKeyword":"聚L-丙氨酸"},{"id":"6ca85d3c-8f14-4c9a-a0a0-b2f759619270","keyword":"开环聚合","originalKeyword":"开环聚合"},{"id":"f364b38e-e3a5-4d23-aeb9-b7fb8ea3d04f","keyword":"嵌段共聚物","originalKeyword":"嵌段共聚物"},{"id":"1d89e4ef-22dd-4dd2-8d72-c81c09db52e7","keyword":"二级结构","originalKeyword":"二级结构"},{"id":"67972f8f-a98d-4f8a-91c3-1b97ddc487f1","keyword":"α-螺旋","originalKeyword":"α-螺旋"}],"language":"zh","publisherId":"gfzclkxygc200603012","title":"两亲聚L-丙氨酸-聚乙二醇单甲醚嵌段共聚物的合成及表征","volume":"22","year":"2006"},{"abstractinfo":"为获得主链规整性高且能形成稳定螺旋结构的炔丙酰胺聚合物,实施了单体M1与单体M2的共聚反应.均聚物1不能形成螺旋结构,均聚物2只有在较低温度下才能形成螺旋结构.不同单体1/2比例的聚合体系,其共聚反应均能顺利进行;共聚物产率高于85%、主链规整性很高(顺式含量大于92%).通过测定紫外-可见吸收谱图表明,共聚物均能形成螺旋结构,并且与均聚物2相比,共聚物所形成的螺旋结构的热稳定性明显改善.","authors":[{"authorName":"楼思斌","id":"0e3c02f1-4063-443c-a9f6-f8cd0cd2b9ef","originalAuthorName":"楼思斌"},{"authorName":"罗晓锋","id":"2d49f161-f0a6-45ad-aa8b-2dbab08a0e16","originalAuthorName":"罗晓锋"},{"authorName":"杨万泰","id":"a7197b1f-4308-4769-adbc-4174e624f7c8","originalAuthorName":"杨万泰"},{"authorName":"邓建平","id":"04a7e0e4-e4a5-49c8-8d40-78eb6e6e141c","originalAuthorName":"邓建平"}],"doi":"","fpage":"40","id":"5b2d1598-69d3-498c-a0e5-cb2d710b209d","issue":"1","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"55e49287-1b2d-453e-93cf-16b57948b5a1","keyword":"N-炔丙基酰胺","originalKeyword":"N-炔丙基酰胺"},{"id":"e65669bf-00b0-4722-8a0e-1d64555be7a4","keyword":"螺旋聚合物","originalKeyword":"螺旋聚合物"},{"id":"d9774469-e340-4f0f-891d-02b071f130dd","keyword":"铑催化剂","originalKeyword":"铑催化剂"},{"id":"509844d8-0a89-450f-843a-e485d03d2f51","keyword":"二级结构","originalKeyword":"二级结构"}],"language":"zh","publisherId":"gfzclkxygc201001012","title":"炔丙基酰胺单体的共聚反应及共聚物的螺旋结构","volume":"26","year":"2010"},{"abstractinfo":"以六氟异丙醇(HFIP)为溶剂,通过静电纺丝方法纺制了不同比例的丝素蛋白/聚乳酸(SF/PLA)共混纳米纤维,并通过SEM、FT-IR、X射线衍射和TG-DTA研究了该纳米纤维非织造网的形态特征、分子结构和热性能.结果表明,纤维直径在246nm～2000nm之间,混纺纤维直径随着SF含量的增大而变粗;FT-IR和X射线衍射谱图都表明混纺纤维有着较高的结晶度,并有相分离发生;TG-DTA曲线中明显的SF和PLA分解峰,进一步证明了在本实验条件下SF与PLA的共混不能形成共溶体系,共混SF/PLA纳米纤维存在两个分离的结晶区,即SF晶区与PLA晶区.","authors":[{"authorName":"张锋","id":"549b77e5-0f4c-49a1-9932-ac9a5c8361f6","originalAuthorName":"张锋"},{"authorName":"戴有刚","id":"695f09bc-878f-439b-b677-d0ca5ea6e03c","originalAuthorName":"戴有刚"},{"authorName":"左保齐","id":"39a59afd-5041-495f-851d-8daaa89fe903","originalAuthorName":"左保齐"},{"authorName":"白伦","id":"307be4ee-5142-4697-a818-0581934a9e79","originalAuthorName":"白伦"}],"doi":"","fpage":"75","id":"61589379-b6a1-4543-9fd6-3a168abce73a","issue":"5","journal":{"abbrevTitle":"GFZCLKXYGC","coverImgSrc":"journal/img/cover/GFZCLKXYGC.jpg","id":"31","issnPpub":"1000-7555","publisherId":"GFZCLKXYGC","title":"高分子材料科学与工程"},"keywords":[{"id":"148f84ab-64ac-4ee0-8a75-dc91d9e64934","keyword":"丝素蛋白/聚乳酸纳米纤维","originalKeyword":"丝素蛋白/聚乳酸纳米纤维"},{"id":"661451af-9a76-439e-8106-24b8fc08cf66","keyword":"静电纺丝","originalKeyword":"静电纺丝"},{"id":"eb4619ff-60e6-4316-b88b-c7bc6e7bd71a","keyword":"二级结构","originalKeyword":"二级结构"},{"id":"92e764f4-3774-4427-a598-fc108b321a9f","keyword":"热性能","originalKeyword":"热性能"}],"language":"zh","publisherId":"gfzclkxygc200905022","title":"静电纺SF/PLA共混纳米纤维的形态结构及热性能","volume":"25","year":"2009"},{"abstractinfo":"采用荧光光谱法、紫外可见吸收光谱和傅立叶变换红外光谱法(FT-IR)研究了模拟生理条件下人血清白蛋白(HSA)与酸性铬兰K(ACBK)的相互作用. 根据荧光猝灭数据,HSA与ACBK有一个结合位点,结合常数为2.3×104 L/mol;根据Frster能量转移理论,求得ACBK与HSA上氨基酸残基间的距离r=3.46 nm;运用蛋白质红外光谱酰胺Ⅰ带和酰胺Ⅲ带结合的方法定量测定了HSA与ACBK作用后二级结构的变化. 结果发现,HSA与ACBK的结合使蛋白质分子中的肽链部分展开,α螺旋结构明显减少约9%,β-折叠减少约2%,而β-转角和无规卷曲分别增加了约6%和5%. 结果说明,说明二级结构由α螺旋和β-折叠向β-转角和无规卷曲结构转变,分子结构的松散程度增加;根据荧光光谱和红外光谱的分析结果探讨了HSA与ACBK结合,结果表明,ACBK分子中苯环的疏水性使其与HSA疏水腔中的氨基酸残基发生相互作用.","authors":[{"authorName":"马萍","id":"9c4e03b8-b6f6-4598-9f25-38ef9b9369dd","originalAuthorName":"马萍"},{"authorName":"迟燕华","id":"7cfa3ede-0a1f-40ec-b293-1f588158c787","originalAuthorName":"迟燕华"},{"authorName":"庄稼","id":"98f67c59-e7bc-43f7-afc2-95d897a09ff1","originalAuthorName":"庄稼"},{"authorName":"邓建军","id":"f2007e09-e0a7-4b12-b865-97879b0818ff","originalAuthorName":"邓建军"},{"authorName":"周磊","id":"cd2d1461-e1c7-4954-a174-6ca5e6f6c7a7","originalAuthorName":"周磊"}],"doi":"10.3969/j.issn.1000-0518.2008.09.007","fpage":"1032","id":"727bcf79-205a-43bc-9362-6be9c20585ca","issue":"9","journal":{"abbrevTitle":"YYHX","coverImgSrc":"journal/img/cover/YYHX.jpg","id":"73","issnPpub":"1000-0518","publisherId":"YYHX","title":"应用化学"},"keywords":[{"id":"13962ca2-e73d-4635-87ef-7f75a5f89542","keyword":"人血清白蛋白","originalKeyword":"人血清白蛋白"},{"id":"5e450900-0ae8-4787-aaa6-d6de5669b076","keyword":"酸性铬兰K","originalKeyword":"酸性铬兰K"},{"id":"e9d7c7c7-825d-4704-a74e-ccb322a13b3b","keyword":"荧光光谱法","originalKeyword":"荧光光谱法"},{"id":"e738816f-3479-4848-8469-59000115b282","keyword":"傅立叶变换红外光谱","originalKeyword":"傅立叶变换红外光谱"},{"id":"818d17d7-d725-4817-8d09-7a6f14bb13ae","keyword":"二级结构","originalKeyword":"二级结构"}],"language":"zh","publisherId":"yyhx200809007","title":"人血清白蛋白与酸性铬兰K相互作用机理的光谱学","volume":"25","year":"2008"},{"abstractinfo":"研究了二级回火工艺对Nd12.0Dy2.8Fe74.7Co3.4Cu0.2B6.9磁体磁性能和微结构的影响.研究结果表明:二级回火对磁体的剩磁和磁能积影响很小,内禀矫顽力Hcj随二级回火温度升高而增大,在480℃时达到最大;高于480℃后,Hcj随二级回火温度的升高而迅速下降;在480℃二级回火时,Hcj随回火时间的增加而增大,经2 h回火达到最大;大于2 h后,回火时间的进一步增加对Hcj影响很小;480℃二级回火2 h时磁体主相晶粒边界光滑,富稀土相在晶界分布连续、均匀.","authors":[{"authorName":"王伟","id":"45acf44c-ed0b-4e39-880d-4578f080bc45","originalAuthorName":"王伟"},{"authorName":"罗伟","id":"0140b830-22e6-4cc0-aac4-ef59e0dfe891","originalAuthorName":"罗伟"},{"authorName":"文玉华","id":"718be517-291f-4b8a-865f-219bafdf3c9f","originalAuthorName":"文玉华"},{"authorName":"于濂清","id":"f53b0a4d-dff1-4490-bce7-b782062a8a32","originalAuthorName":"于濂清"},{"authorName":"严密","id":"709e1718-cf7a-4253-be2a-8965e8b6b76f","originalAuthorName":"严密"}],"doi":"","fpage":"1633","id":"92f4a2c5-9a12-4b5f-9d2d-2a2b1ff3a736","issue":"10","journal":{"abbrevTitle":"XYJSCLYGC","coverImgSrc":"journal/img/cover/XYJSCLYGC.jpg","id":"69","issnPpub":"1002-185X","publisherId":"XYJSCLYGC","title":"稀有金属材料与工程"},"keywords":[{"id":"2c1139ff-3a0e-4478-8e39-83eaf87332d5","keyword":"烧结钕铁硼","originalKeyword":"烧结钕铁硼"},{"id":"42022e10-0095-4f91-97c5-1e9e4cf62617","keyword":"二级回火","originalKeyword":"二级回火"},{"id":"24d4ec97-d2b6-4c38-b52b-392315417da4","keyword":"磁性能","originalKeyword":"磁性能"},{"id":"cf9ba278-c8ae-4dbc-b412-92ef3222abbe","keyword":"富稀土相","originalKeyword":"富稀土相"}],"language":"zh","publisherId":"xyjsclygc200510030","title":"二级回火对(NdDy)FeCoCuB磁体磁性能和微结构的影响","volume":"34","year":"2005"},{"abstractinfo":"将粉煤灰、硅灰和纳米纤维材料-活性NR粉应用于水泥基材料中,依据最大密实度理论和微粒级配数学模型设计出水泥基材料,研究了水泥基材料中二级界面对其性能的影响.结果表明,加入活性NR粉纳米纤维矿物可改善体系的颗粒级配和水泥基材料中二级界面的显微结构,提高均匀性,降低孔隙率,优化体系的孔结构.改善二级界面的显微结构可降低体系的总比孔容,提高球形孔隙体积率,降低体系的最可几孔径,优化硬化浆体的孔结构以及提高体系的内部拉应力,提高水泥基材料的抗弯强度.","authors":[{"authorName":"冯奇","id":"a26ca036-9ec6-4827-b7fa-810298245523","originalAuthorName":"冯奇"},{"authorName":"巴恒静","id":"f7a98c82-3be1-4159-8405-cfcb1a5630e4","originalAuthorName":"巴恒静"},{"authorName":"刘光明","id":"1033e8da-ea85-4067-8764-097550899e1c","originalAuthorName":"刘光明"}],"doi":"10.3321/j.issn:1005-3093.2003.05.007","fpage":"489","id":"94a73af3-6fb2-4103-8a0c-025d6d7df9df","issue":"5","journal":{"abbrevTitle":"CLYJXB","coverImgSrc":"journal/img/cover/CLYJXB.jpg","id":"16","issnPpub":"1005-3093","publisherId":"CLYJXB","title":"材料研究学报"},"keywords":[{"id":"d3e689cf-863a-4253-8edb-7aca25e06a2b","keyword":"无机非金属材料","originalKeyword":"无机非金属材料"},{"id":"57b3f3db-c829-4af1-975f-55d27b772cc1","keyword":"水泥基复合材料","originalKeyword":"水泥基复合材料"},{"id":"ed27fa13-e1a0-4e40-851d-c69a8f2c2670","keyword":"二级界面","originalKeyword":"二级界面"},{"id":"c4490087-0f58-4d89-80f6-64a5ce28be17","keyword":"孔结构","originalKeyword":"孔结构"},{"id":"4dd63235-e157-4192-a033-86ef4a4a0db6","keyword":"NR粉","originalKeyword":"NR粉"}],"language":"zh","publisherId":"clyjxb200305007","title":"二级界面对水泥基材料孔结构和性能的影响","volume":"17","year":"2003"},{"abstractinfo":"空间充气展开结构二级相转变硬化技术是应用于大型空间充气展开结构的一项技术.本文介绍了此技术的机理和应用优势,综述国内外研究机构在树脂基体材料、增强材料的研究和该技术应用等方面的最新研究成果.","authors":[{"authorName":"刘宇艳","id":"2af9ed7b-486d-4fcc-9e55-dab2a8abfc1a","originalAuthorName":"刘宇艳"},{"authorName":"刘晓磊","id":"8e311aef-42d5-4400-99fd-1aa77c410652","originalAuthorName":"刘晓磊"},{"authorName":"杜星文","id":"8565b745-bb0f-44c8-91f8-3e7296026038","originalAuthorName":"杜星文"}],"doi":"10.3969/j.issn.1001-4381.2006.z1.116","fpage":"438","id":"d1aa2d93-cea5-4219-835d-747a8fa02089","issue":"z1","journal":{"abbrevTitle":"CLGC","coverImgSrc":"journal/img/cover/CLGC.jpg","id":"9","issnPpub":"1001-4381","publisherId":"CLGC","title":"材料工程"},"keywords":[{"id":"50f29828-539b-4926-9dc1-75a307fe8605","keyword":"空间可充气展开结构","originalKeyword":"空间可充气展开结构"},{"id":"429b8ec9-960b-496f-9b30-b19ddf40cc3d","keyword":"二级相变","originalKeyword":"二级相变"},{"id":"8502684f-f844-41d3-ad44-83a5b7070c8d","keyword":"热塑性树脂","originalKeyword":"热塑性树脂"},{"id":"ed1e1b35-fb23-4ddc-83b9-82116c2b1f0b","keyword":"形状记忆聚合物","originalKeyword":"形状记忆聚合物"}],"language":"zh","publisherId":"clgc2006z1116","title":"空间充气展开结构二级相变硬化技术研究现状","volume":"","year":"2006"},{"abstractinfo":"用溶胶凝胶法制备不同比例纳米TiO2改性再生蚕丝丝素蛋白复合膜.SEM与动态光散射纳米粒度分析仪测试结果表明,该丝素膜中纳米TiO2均匀分散在丝素中,TiO2粒径在100nm以下,同时纳米TiO2在丝素中粒径大小主要决定于凝胶过程,成膜过程对粒径大小影响不大;该丝素膜的二级结构用FTIR、XRD、Raman进行表征.测试结果表明,纯丝素膜中存在SilkⅠ向SilkⅡ两种结晶结构,随着纳米TiO2的生成,可使复合丝素膜的结晶结构从SilkⅠ向SilkⅡ转化,但当纳米TiO2的加入超过一定量时,又破坏复合丝素膜的结晶结构.","authors":[{"authorName":"冯新星","id":"e650be5f-8ada-4e5e-9542-6f975e874463","originalAuthorName":"冯新星"},{"authorName":"张建春","id":"431d5402-9461-47d9-9d26-b63a000a1e8f","originalAuthorName":"张建春"},{"authorName":"陈建勇","id":"01d33046-a5d8-4cdd-bcc6-1115512a975a","originalAuthorName":"陈建勇"},{"authorName":"张华鹏","id":"a5b32f90-146c-4e20-a5d8-c7a9841ef073","originalAuthorName":"张华鹏"},{"authorName":"郭玉海","id":"9d17b0c1-cd57-43c0-ae37-96c9c7a71780","originalAuthorName":"郭玉海"}],"doi":"","fpage":"479","id":"aaf350d9-bccb-47ad-9a23-505ac2df84de","issue":"3","journal":{"abbrevTitle":"GNCL","coverImgSrc":"journal/img/cover/GNCL.jpg","id":"33","issnPpub":"1001-9731","publisherId":"GNCL","title":"功能材料"},"keywords":[{"id":"e4ae5b7f-4e85-480c-9f62-cc63e437dc5b","keyword":"蚕丝丝素蛋白","originalKeyword":"蚕丝丝素蛋白"},{"id":"148617fd-f390-464e-9437-52020b3cff20","keyword":"纳米TiO2","originalKeyword":"纳米TiO2"},{"id":"c7bde4e2-7dd8-4aa6-9563-1088b3257c21","keyword":"结晶结构","originalKeyword":"结晶结构"},{"id":"ba6ceac4-9c42-49e7-ade8-05d48248fa7d","keyword":"二级结构转变","originalKeyword":"二级结构转变"}],"language":"zh","publisherId":"gncl200803039","title":"纳米TiO2诱导复合丝素蛋白膜二级结构转变的研究","volume":"39","year":"2008"},{"abstractinfo":"本文讨论了Y型二级管路分别在占地面积、体积以及占地面积、表面积约束下的最优管径比、最优管长比、最优分岔角度.优化方法采用拉格朗日乘子法和虚功原理方法.通过分析发现:最优树状管路的结构参数随约束条件和流动状态的变化而变化.这意味着对层流流动和湍流流动的情况,树状结构最优参数会表现出差异.本文的忧化结果为不同情况下的树状结构设计提供了基本参考.","authors":[{"authorName":"张东辉","id":"19835234-39f5-4083-a48f-22cd6fcedff3","originalAuthorName":"张东辉"},{"authorName":"张伟琳","id":"17c3e20d-0352-417f-acaf-ed3dd36491f4","originalAuthorName":"张伟琳"},{"authorName":"赵忠超","id":"5c6306e0-32f2-416c-b256-1800822ab348","originalAuthorName":"赵忠超"},{"authorName":"唐春丽","id":"711496f8-dd34-4845-8630-002aaa536189","originalAuthorName":"唐春丽"}],"doi":"","fpage":"2094","id":"409d8faf-540b-4b95-a90f-76247aa86b60","issue":"12","journal":{"abbrevTitle":"GCRWLXB","coverImgSrc":"journal/img/cover/GCRWLXB.jpg","id":"32","issnPpub":"0253-231X","publisherId":"GCRWLXB","title":"工程热物理学报 "},"keywords":[{"id":"6997f9a2-7273-4d29-bf7b-92e84a59bb81","keyword":"树状结构","originalKeyword":"树状结构"},{"id":"d7b797a1-95b1-477b-ba58-2f3d1dbcfd98","keyword":"拉格朗日乘子法","originalKeyword":"拉格朗日乘子法"},{"id":"71e6421d-5be4-4f73-9c65-c563e1d5eae5","keyword":"虚功原理","originalKeyword":"虚功原理"}],"language":"zh","publisherId":"gcrwlxb201012029","title":"二级树状管路的优化分析","volume":"31","year":"2010"}],"totalpage":8260,"totalrecord":82597}