类水滑石及碳酸钙填充PBAT基薄膜的制备及性能研究
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中图法分类号：TB34 文献标识码：A 文章编号：1000-2324（2025）04-0591-11
Preparation and Performance of Hydrotalcite-like and Calcium Carbonate-based PBATFilms
ZHU Lin-xiang'， ZHANG Kun1，3* ， ZHANG Bing'， SONG Yi-zhao'， ZHANG Xin-yuel'， LIU Zai-qi²， XIE Jia-zhuo1，3**， XU Jingt1，3**
1.CollegeofChemistryandMaterial Science/ShandongAgricultural University，Tai'an27018，China
2.TaianBoyangChemical TechnologyCo.，Ltd.，Tai'an271024，China
3.KeyLaboratoryofAgriculturalFilmApplicationofMinistryfAgricultureandRuralAffairs，Ti'an2718，Chi
Abstract：The"whitepolution"causedbytraditional plasticmulch filmsposesasignificantthreattotheecological environment. Increasing environmental awareness and the widespread adoption of sustainable development principles have propeled full biodegradablemulch films intoaresearch hotspot.Poly（butyleneadipate-co-terephthalate）（PBAT）-based filmsexhibit excelent properties；modifying these films through dopingcanenhancetheiroverallperformance while reducingcosts.Toproducecost-eectivefunctionalagriculturalbiodegradablefilms，thisstudyutilizedtwodistinclayered double hydroxides （LDHs） and calcium carbonate （CaCO3） ， blending them with PBAT via twin-screw extrusion to prepare composite masterbatches.PBAT-based composite filmswere subsequently fabricated from these masterbatches using extrusionblow molding.Aseries of structural and performance tests verified the feasibilityof blending LDHs into PBAT composite films.These tests analyzed the effects of both modified and unmodified LDHs，as well as CaCO3 ，on the structure and propertiesofthecomposite fims.Theresults demonstrate thatLDHsdonotafectthe structureorcrystalinityof PBAT withintecompositefilms.Whileblendingincreased filmcrystalinityitreducedthermalstability.LDHsimproved the mechanical properties and reduced theanisotropyof the films.Among the experimental groups，the composite film incorporating CaCO3 alongside unmodified LDHs exhibited the optimal mechanical performance.Furthermore，the compositefilmsshowedenhanced waterbarierpropertiesandhydrophobicity.Lighttransmitanceexhibitednosignificant change，but haze decreased，resulting in improved light transmission characteristics.
Keywords：PBAT;LDHs; CaCO3 ；biodegradable film;hydrophobicity
我国作为农业生产大国，拥有丰富的耕地资源，农业在国家经济中扮演着至关重要的角色。（剩余14159字）