Thermo-Mechanical and Creep Behaviour of Polylactic Acid/Thermoplastic Polyurethane Blends

銆婅仛涔抽吀/鐑鎬ц仛姘ㄩ叝鍏辨贩鐗╃殑鐑満姊板拰锠曞彉琛屼负銆�

浣滆€咃細

Yi-Sheng Jhao, Hao Quyang, Fuqian Yang and Sanboh Lee

杞嚜锛�

https://www.mdpi.com/2073-4360/14/23/5276

鏉ユ簮锛�

Polymers聽2022,聽14(23), 5276

鏂囩珷鏉ユ簮缃戠粶 濡傛湁渚垫潈 璇疯仈绯诲垹闄�

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鍥�2. PLA銆乀PU鍜孭LA/TPU娣峰悎鐗╃殑DSC鏇茬嚎

宸茬粡瑙傚療鍒拌澶氬崐缁撴櫠鑱氬悎鐗╃殑鍙岄噸鐔旇瀺琛屼负锛屽寘鎷仛(瀵硅嫰浜岀敳閰镐竵浜岄唶閰�)銆佽仛(瀵硅嫰浜岀敳閰镐箼浜岄唶閰�)鍜岃仛(閱氶叜)[23,24,25,26]銆備綆娓╁惛鐑嘲琛ㄧず鈥滃師濮嬧€濇櫠浣撶殑閮ㄥ垎鐔斿寲锛岄珮娓╁惛鐑嘲琛ㄧず鍔犵儹杩囩▼涓€滈噸缁勨€濇櫠浣撶殑鐔斿寲[27]銆�

鏍规嵁鍥�2锛孴PU娌℃湁鍐风粨鏅舵斁鐑嘲锛岀鍚圱PU鐨勯潪鏅剁粨鏋勩€侾LA鏄竴绉嶇粨鏅堕€熷害杈冩參鐨勫崐缁撴櫠鑱氬悎鐗┿€傚湪DSC娴嬮噺涔嬪墠浠�220掳C 蹇€熸番鐏玃LA浣垮緱PLA鍦ㄥ喎鍗磋繃绋嬩腑涓嶇粨鏅讹紝鍗砅LA鑱氬悎鐗╅摼娌℃湁瓒冲鐨勬椂闂磋縼绉诲埌骞宠　浣嶇疆銆傚湪鍔犵儹杩囩▼涓紝鑱氬悎鐗╁惛鏀惰兘閲忥紝浣胯仛鍚堢墿閾惧彂鐢熻縼绉伙紝骞跺鑷碢LA鍦�110.3掳C宸﹀彸鍑虹幇鍐风粨鏅舵斁鐑嘲銆侾LA/TPU鍏辨贩鐗╃殑鍐风粨鏅舵斁鐑嘲闅忕潃TPU鍒嗘暟鐨勫鍔犺€岄檷浣庯紝姝ｅ棰勬湡鐨勯偅鏍凤紝TPU涓嶅瓨鍦ㄥ喎缁撴櫠鏀剧儹宄般€�

琛ュ厖淇℃伅涓殑鍥�3鍜屽浘S1鈥揝5鏄剧ず浜哖LA銆乀PU鍜孭LA/TPU鍏辨贩鐗╁湪10銆�20銆�30鍜�40掳C鍥涚娓╁害涓嬩笉鍚屾媺浼稿簲鍔涗笅鐨勮爼鍙樻洸绾垮拰鎭㈠鏇茬嚎銆傚緢鏄庢樉锛岃爼鍙樻洸绾跨敱涓ょ鐘舵€佺粍鎴愨€斺€旂灛鎬佸拰绋虫€�(浜屾锠曞彉)銆傚浜庢墍鏈塒LA銆乀PU鍜孭LA/TPU鍏辨贩鐗╋紝鍦ㄥ畬鍏ㄥ幓闄ゅ簲鍔�/璐熻浇鍚庢湁涓€涓仮澶嶈繃绋嬨€傚簲璇ユ敞鎰忕殑鏄紝鎵€鏈塒LA銆乀PU鍜孭LA/TPU鍏辨贩鐗╃殑锠曞彉鍙樺舰浠呴檺浜庝簩娆¤爼鍙橈紝浠ラ伩鍏嶅嚭鐜颁笁娆¤爼鍙樺拰璇曟牱澶辨晥/鏂銆�

鍥�3. 鍦�(a)10掳C锛�(b)20掳C锛�(c)30掳C鍜�(d)40掳C鐨勪笉鍚屾媺浼稿簲鍔涗笅锛孭LA/TPU璐ㄩ噺姣斾负70:30鐨凱LA/TPU鍏辨贩鐗╃殑锠曞彉鏇茬嚎

浠庡浘3鍜屽浘S1鈥揝5锛屾垜浠绠椾簡绋虫€佷笅鐨勮爼鍙橀€熺巼銆傚浘4鏄剧ず浜哖LA銆丳LA/TPU鍏辨贩鐗╁拰TPU鍦ㄤ笉鍚岃爼鍙樻俯搴︿笅鐨勭ǔ鎬佽爼鍙樼殑锠曞彉閫熺巼闅忔柦鍔犲簲鍔涚殑鍙樺寲銆傛濡傞鏈熺殑閭ｆ牱锛岀ǔ鎬佷笅鐨勮爼鍙橀€熺巼闅忕潃娓╁害鍜屾柦鍔犲簲鍔涚殑澧炲姞鑰屽鍔犮€�

鍥�4. 涓嶅悓锠曞彉娓╁害涓嬶紝绋虫€佽爼鍙樻儏鍐典笅锠曞彉閫熺巼鐨勫簲鍔涗緷璧栨€э細(a)PLA锛屄�(b) PLA/TPU鍏辨贩鐗╋紝PLA涓嶵PU鐨勬瘮渚嬩负70:30聽聽(c) PLA/TPU鍏辨贩鐗╋紝PLA涓嶵PU鐨勬瘮渚嬩负50:50聽聽(d)PLA/TPU鍏辨贩鐗╋紝PLA涓嶵PU鐨勬瘮渚嬩负30:70

鍥�5鏄剧ず浜嗗簲鍔涙寚鏁伴殢TPU璐ㄩ噺鍒嗘暟鐨勫彉鍖栥€傚簲鍔涙寚鏁颁粠PLA鐨�1.73绾挎€т笅闄嶅埌TPU鐨�1.17銆傝繖绉嶈秼鍔胯〃鏄庯紝澧炲姞PLA/TPU鍏辨贩鐗╀腑TPU鐨勬瘮渚嬩細闄嶄綆鑱氬悎鐗╅摼杩愬姩鐨勯樆鍔涖€傛牴鎹浘5涓殑缁撴灉锛屽簲鍔涙寚鏁板PLA/TPU鍏辨贩鐗╀腑TPU璐ㄩ噺鍒嗘暟鐨勪緷璧栨€у彲琛ㄧず涓猴細

鍏朵腑mPLA鍜宮TPU鍒嗗埆鏄疨LA鍜孴PU鐨勮川閲忋€傝繖鏍风殑缁撴灉涓嶱LA鍜孴PU鍦ㄧ儹鍔涘涓婁笉娣锋憾鏄竴鑷寸殑銆�

鍥�5. 搴斿姏鎸囨暟闅廡PU璐ㄩ噺鍒嗘暟鐨勫彉鍖�

鍥�6鏄剧ず浜嗛潪绾挎€urgers妯″瀷鐨凨elvin绀烘剰鍥俱€傚叾涓紝E1鍜孍2鏄浉搴斿脊绨у厓浠剁殑寮规€у父鏁帮紝畏1鏄潪绾挎€ч樆灏煎櫒I鐨勭矘搴︼紝畏2鏄嚎鎬ч樆灏煎櫒II鐨勭矘搴︼紝蟽銆佅傾鍜屜傿鏄綔鐢ㄥ湪鐩稿簲鍏冧欢涓婄殑搴斿姏锛屛� , 蔚1鍜屛�2鏄浉搴斿崟鍏冪殑搴斿彉銆傚脊绨鍜孖I浠ュ強闃诲凹鍣↖I鏄嚎鎬у厓浠躲€�

鍥�6. 闈炵嚎鎬urgers妯″瀷鐨凨elvin绀烘剰鍥�

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鍏朵粬鍏冪礌鎵€缁忓巻鐨勫簲鍙�/搴斿彉鐜囦笌鐩稿簲鐨勬柦鍔犲簲鍔涙垚姝ｆ瘮銆傚湪鎭掑畾搴斿姏(锠曞彉鍙樺舰)浣滅敤涓嬶紝鎴戜滑鍙互閲囩敤涓庣嚎鎬urgers妯″瀷鐨凨elvin绀烘剰鍥剧浉鍚岀殑鏂规硶鏉ヨ幏寰楅潪绾挎€urgers妯″瀷鐨勫悎鎴愬簲鍙樜电殑鏃堕棿渚濊禆鎬э紝濡備笅鎵€绀猴細

鍏朵腑t涓鸿爼鍙樻椂闂达紝尾c=E2/畏2銆傚叾涓紝E1鍜屛�1鍒嗗埆涓哄脊绨�1鐨勫脊鎬у父鏁板拰闈炵嚎鎬ч樆灏煎櫒1鐨勭矘鎬э紝E2鍜屛�2鍒嗗埆涓哄脊绨�2鐨勫脊鎬у父鏁板拰绾挎€ч樆灏煎櫒2鐨勭矘鎬э紝尾鈭�1c鏄潪绾挎€urgers锠曞彉鍙樺舰妯″瀷鐨勭壒寰佹椂闂淬€傜涓€椤逛唬琛ㄧ灛鏃跺脊鎬у彉褰紝绗簩椤逛唬琛ㄧǔ鎬佽爼鍙橈紝绗笁椤瑰搴旂灛鎬佽爼鍙樺彉褰€€�

浣跨敤鍥�5鍜屾柟绋嬪紡(4)涓樉绀虹殑鎸囨暟锛屾垜浠鍥�3鍜屽浘S1鈥揝5涓殑锠曞彉鏇茬嚎杩涜鏇茬嚎鎷熷悎锛屽苟纭畾E1銆丒2銆佄�1鍜屛�2鐨勫弬鏁般€備负浜嗚繘琛屾瘮杈冿紝鎷熷悎鏇茬嚎鍖呭惈鍦ㄥ浘3鍜屽浘S1鈥揝5涓€傚緢鏄庢樉锛屾柟绋嬪紡(4)寰堝ソ鍦版弿杩颁簡PLA銆乀PU鍜孭LA/TPU娣峰悎鐗╃殑锠曞彉鍙樺舰鐩磋嚦绋虫€佽爼鍙樸€�

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琛�1. PLA銆乀PU鍜孭LA/TPU娣峰悎鐗╃殑E1鍜孍2鐨勬俯搴︿緷璧栨€�

鏍规嵁鐑縺娲昏繃绋嬬殑鐞嗚锛屛�1鍜屛�2鐨勬俯搴︿緷璧栨€ч伒寰狝rrhenius鍏崇郴锛�

鍏朵腑畏10鍜屛�20鏄袱涓父鏁帮紝Qs鍜孮k鍒嗗埆鏄ǔ鎬佽爼鍙樺拰鐬€佽爼鍙橀€熺巼杩囩▼鐨勬椿鍖栬兘锛孯鏄皵浣撳父鏁帮紝T鏄粷瀵规俯搴︺€傚浘7鏄剧ず浜單�1鍜屛�2鐨勬俯搴︿緷璧栨€с€傚緢鏄庢樉锛屛�-11鍜屛�-12閮芥槸T-1鐨勬寚鏁伴€掑噺鍑芥暟銆備娇鐢ㄧ瓑寮�(5)鎷熷悎鍥�7a銆乥涓殑鏁版嵁锛屾垜浠幏寰椾簡PLA銆乀PU鍜孭LA/TPU鍏辨贩鐗╄爼鍙樺彉褰㈢殑娲诲寲鑳姐€�

鍥�7. 畏1(a)鍜屛�2(b)鐨勬俯搴︿緷璧栨€�

鍥�8鏄剧ず浜哘s鍜孮k闅廡PU璐ㄩ噺鍒嗘暟鐨勫彉鍖栥€傞殢鐫€TPU璐ㄩ噺鍒嗘暟鐨勫鍔狅紝Qs鍜孮k鍛堢嚎鎬т笅闄嶏紝琛ㄦ槑PLA/TPU鍏辨贩鐗╃殑娲诲寲鑳藉彲琛ㄧず涓猴細

鍏朵腑涓婃爣b浠ｈ〃PLA/TPU鍏辨贩鐗╋紝PLA鍜孴PU鐨勪笂鏍囧拰涓嬫爣浠ｈ〃瀵瑰簲鐨凱LA鍜孴PU銆傝繖鏍风殑缁撴灉鍐嶆涓嶱LA鍜孴PU鍦ㄧ儹鍔涘涓婁笉娣锋憾鐩镐竴鑷淬€傝娉ㄦ剰锛屽浜庣浉鍚岀殑PLA/TPU娣峰悎鐗╋紝Qs澶т簬Qk锛岃繖绉嶈涓轰笌鑱氬悎鐗╅摼鐨勪笉鍚岀姸鎬佹湁鍏炽€傚湪绋虫€佽爼鍙樺紑濮嬩箣鍓嶏紝鑱氬悎鐗╅摼澶勪簬鐩稿鏉惧紱鐨勭姸鎬侊紝杩佺Щ闃诲姏杈冨皬銆傚湪绋虫€佽爼鍙樹笅锛岃仛鍚堢墿閾惧浜庢媺浼哥姸鎬侊紝瀵硅縼绉绘湁寰堝ぇ鐨勯樆鍔涖€備笌鐬€佺浉姣旓紝鑱氬悎鐗╅摼闇€瑕佸厠鏈嶆洿澶х殑鑳藉瀿鎵嶈兘鍦ㄧǔ鎬佽爼鍙樹笅杈惧埌鏂扮姸鎬併€�

鍥�8. Qs鍜孮k闅廡PU璐ㄩ噺鍒嗘暟鐨勫彉鍖�

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杞嚜锛�

https://www.mdpi.com/2073-4360/14/23/5276

鍙傝€冩枃鐚細

1.Drumright, R.E.; Gruber, P.R.; Henton, D.E. Polylactic acid technology.聽Adv. Mater.聽2000,聽12, 1841鈥�1846.

2.Matta, A.; Rao, R.U.; Suman, K.; Rambabu, V. Preparation and characterization of biodegradable PLA/PCL polymeric blends.聽Procedia Mater. Sci.聽2014,聽6, 1266鈥�1270.

3.Ho, C.-H.; Wang, C.-H.; Lin, C.-I.; Lee, Y.-D. Synthesis and characterization of TPO鈥揚LA copolymer and its behavior as compatibilizer for PLA/TPO blends.聽Polymer聽2008,聽49, 3902鈥�3910.

4.Tokoro, R.; Vu, D.M.; Okubo, K.; Tanaka, T.; Fujii, T.; Fujiura, T. How to improve mechanical properties of polylactic acid with bamboo fibers.聽J. Mater. Sci.聽2008,聽43, 775鈥�787.

5.Bax, B.; Mussig, J. Impact and tensile properties of PLA/Cordenka and PLA/flax composites.聽Compos. Sci. Technol.聽2008,聽68, 1601鈥�1607.

6.Rozite, L.; Varna, J.; Joffe, R.; Pupurs, A. Nonlinear behavior of PLA and lignin-based flax composites subjected to tensile loading.聽J. Thermoplast. Compos.聽2013,聽26, 476鈥�496.

7.Couture, A.; Lebrun, G.; Laperriere, L. Mechanical properties of polylactic acid (PLA) composites reinforced with unidirectional flax and flax-paper layers.聽Compos. Struct.聽2016,聽154, 286鈥�295.

8.Papa, I.; Lopresto, V.; Simeoli, G.; Langella, A.; Russo, P. Ultrasonic damage investigation on woven jute/poly (lactic acid) composites subjected to low velocity impact.聽Compos. Part B-Eng.聽2017,聽115, 282鈥�288.

9.Gibeop, N.; Lee, D.W.; Prasad, C.V.; Toru, F.; Kim, B.S.; Song, J.I. Effect of plasma treatment on mechanical properties of jute fiber/poly (lactic acid) biodegradable composites.聽Adv. Compos. Mater.聽2013,聽22, 389鈥�399.

10.Yang, T.C.; Wu, T.L.; Hung, K.C.; Chen, Y.L.; Wu, J.H. Mechanical properties and extended creep behavior of bamboo fiber reinforced recycled poly(lactic acid) composites using the time-temperature superposition principle.聽Constr. Build. Mater.聽2015,聽93, 558鈥�563.

11.Georgiopoulos, P.; Kontou, E.; Christopoulos, A. Short-term creep behavior of a biodegradable polymer reinforced with wood-fibers.聽Compos. Part B-Eng.聽2015,聽80, 134鈥�144.

12.Morreale, M.; Mistretta, M.C.; Fiore, V. Creep Behavior of Poly(lactic acid) Based Biocomposites.聽Materials聽2017,聽10, 395.

13.Ye, J.; Yao, T.Y.; Deng, Z.C.; Zhang, K.; Dai, S.; Liu, X.B. A modified creep model of polylactic acid (PLA-max) materials with different printing angles processed by fused filament fabrication.聽J. Appl. Polym. Sci.聽2021,聽138, 50270.

14.Waseem, M.; Salah, B.; Habib, T.; Saleem, W.; Abas, M.; Khan, R.; Ghani, U.; Siddiqi, M.U.R. Multi-Response Optimization of Tensile Creep Behavior of PLA 3D Printed Parts Using Categorical Response Surface Methodology.聽Polymers聽2020,聽12, 2962.

15.Guedes, R.M.; Singh, A.; Pinto, V. Viscoelastic modelling of creep and stress relaxation behaviour in PLA-PCL fibres.聽Fiber Polym.聽2017,聽18, 2443鈥�2453.

16.Niaza, K.V.; Senatov, F.S.; Stepashkin, A.; Anisimova, N.Y.; Kiselevsky, M.V. Long-term creep and impact strength of biocompatible 3d-printed pla-based scaffolds. In聽Nano Hybrids and Composites; Trans Tech Publication Ltd.: Zurich, Switzerland, 2017; Volume 13, pp. 15鈥�20.

17.Jing, X.; Mi, H.Y.; Peng, X.F.; Turng, L.S. The morphology, properties, and shape memory behavior of polylactic acid/thermoplastic polyurethane blends.聽Polym. Eng. Sci.聽2015,聽55, 70鈥�80.

18.Li, Y.; Shimizu, H. Toughening of polylactide by melt blending with a biodegradable poly (ether) urethane elastomer.聽Macromol. Biosci.聽2007,聽7, 921鈥�928.

19.Lubis, M.A.R.; Handika, S.O.; Sari, R.K.; Iswanto, A.H.; Antov, P.; Kristak, L.; Lee, S.H.; Pizzi, A. Modification of Ramie Fiber via Impregnation with Low Viscosity Bio-Polyurethane Resins Derived from Lignin.聽Polymers聽2022,聽14, 2165.

20.Aristri, M.A.; Lubis, M.A.R.; Iswanto, A.H.; Fatriasari, W.; Sari, R.K.; Antov, P.; Gajtanska, M.; Papadopoulos, A.N.; Pizzi, A.J.F. Bio-Based Polyurethane Resins Derived from Tannin: Source, Synthesis, Characterisation, and Application.聽Forests聽2021,聽12, 1516.

21.Yasuniwa, M.; Tsubakihara, S.; Sugimoto, Y.; Nakafuku, C. Thermal analysis of the double-melting behavior of poly (L-lactic acid).聽J. Polym. Sci. Part B Polym. Phys.聽2004,聽42, 25鈥�32.

22.Shi, Q.; Mou, H.; Gao, L.; Yang, J.; Guo, W. Double-melting behavior of bamboo fiber/talc/poly (lactic acid) composites.聽J. Polym. Environ.聽2010,聽18, 567鈥�575.

23.Yasuniwa, M.; Tsubakihara, S.; Ohoshita, K.; Tokudome, S.I. X-ray studies on the double melting behavior of poly (butylene terephthalate).聽J. Polym. Sci. Part B Polym. Phys.聽2001,聽39, 2005鈥�2015.

24.Hobbs, S.; Pratt, C. Multiple melting in poly (butylene terephthalate).聽Polymer聽1975,聽16, 462鈥�464.

25.Holdsworth, P.; Turner-Jones, A. The melting behaviour of heat crystallized poly (ethylene terephthalate).聽Polymer聽1971,聽12, 195鈥�208.

26.Todoki, M.; Kawaguchi, T. Origin of double melting peaks in drawn nylon 6 yarns.聽J. Polym. Sci. Polym. Phys. Ed.聽1977,聽15, 1067鈥�1075.

27.Chen, H.L.; Porter, R.S. Melting behavior of poly (ether ether ketone) in its blends with poly (ether imide).聽J. Polym. Sci. Part B Polym. Phys.聽1993,聽31, 1845鈥�1850.

28.Mitchell, T.E.; Hirth, J.; Misra, A. Apparent activation energy and stress exponent in materials with a high Peierls stress.聽Acta Mater.聽2002,聽50, 1087鈥�1093.

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