CN114729164A - 生物降解性树脂组合物及其制备方法 - Google Patents
生物降解性树脂组合物及其制备方法 Download PDFInfo
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- CN114729164A CN114729164A CN202080081896.4A CN202080081896A CN114729164A CN 114729164 A CN114729164 A CN 114729164A CN 202080081896 A CN202080081896 A CN 202080081896A CN 114729164 A CN114729164 A CN 114729164A
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Abstract
本发明涉及一种生物降解性树脂组合物及其制备方法,具体涉及包含聚乙烯、生物降解性树脂以及选自聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物中的一种以上,以提供包含三组分的生物降解性树脂,从而能够提供优秀的相容性和机械物性的技术。
Description
技术领域
本发明涉及一种生物降解性树脂组合物及其制备方法,具体涉及包含聚乙烯、生物降解性树脂以及选自聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物中的一种以上,以提供包含三组分的生物降解性树脂,从而能够提供优秀的相容性和机械物性的技术。
背景技术
塑料(plastic)不仅物性出色,而且因价格低廉且轻便的特性而突破了天然材料所具有的局限性,从而以塑料为中心,开发出了多种高分子材料,构筑了现代科学文明。塑料具有硬、轻、韧并且不易降解的特性,基于这种性质,从工业用材料到一次性材料中得到了多种应用。为了进一步提高诸如塑料等合成树脂的韧性及耐久性,已经进行了长期研究,并且仍在继续努力。然而,塑料废弃物导致的环境污染问题日益严重,例如,剧毒性二噁英的检出、环境激素的泄露等,因此,社会对于环保塑料的要求以及各国对于使用非降解性塑料的法律法规的标准也在逐步加强。为此,开发生物降解性高分子正成为非常重要的事项,并且在塑料工业中也作为重要领域备受关注。
通常,根据美国材料与试验协会(American Society for Testing andMaterials;ASTM),降解性塑料是指,在特定环境条件下,在规定时间内,化学结构发生相当大的变化,且可通过标准测试方法测量其性质变化的塑料,可分为光降解性塑料、生物崩坏性塑料、生物降解性塑料。
更具体地,光降解性塑料是指通过光氧化或酮光降解等形式被光降解的塑料。然而,光降解性塑料被光降解,因此,其缺点在于,当被埋入光被阻断的地下时无法被降解。生物崩坏性塑料是指向非降解性的一般的通用树脂(聚乙烯、聚丙烯等)中添加规定量的诸如淀粉等生物降解性材料而制备出的部分降解性塑料,在韩国,使用“生物崩坏性塑料”作为术语加以区分,以避免与生物降解性塑料混淆。生物降解性塑料通常是指塑料自身被诸如细菌、藻类、霉菌等自然界中存在的微生物完全地降解为水和二氧化碳或水和甲烷气体的塑料。
以往主要使用的是光降解性塑料或生物崩坏性塑料,但是近期,开发生物降解性塑料正在成为重要的事项。这不仅从原料方面就使用天然的植物资源以区别于现有的石油类塑料,而且能够提供在自然界中被微生物完全地仅降解为水和二氧化碳的清洁性,因此,全球趋势也是以生物降解性塑料为主流进行开发。
另一方面,当包含生物降解树脂以提高生物降解性时,与热塑性塑料的相容性成为主要的问题。为此,生物降解树脂,例如淀粉可采用向羟基(-OH)中导入取代基以改变物性或生成自由基以与乙烯类单体共聚的方法来解决相容性。只是,此时难以提供满足相容性或生物降解性的水准,因此略有局限性。因此,近期为了在提高相容性的同时,提高生物降解性和机械物性,正在开发多种技术。
例如,韩国公开专利公报第10-2018-0023037号公开了一种热塑性膜组合物,其包含作为非混合性的聚合物组分的聚合物共混体。所述组合物包含经塑化的天然聚合物、聚烯烃、生物降解性聚合物以及在同一聚合物分子上的相容剂。经塑化的天然组分及生物降解性聚合物组分形成多数相,石油基烯烃聚合物形成少数相。另外,还公开了能够将所述组合物制造成包含可再生的天然聚合物组分的膜。
再例如,韩国公开专利公报第10-2017-0075052号公开了一种用于覆盖膜的树脂组合物及其膜,该树脂组合物包含:(i)生物降解性树脂;(ii)葡萄糖单元的羟基(-OH基)中的至少一个被氢化处理为硅烷的淀粉;(iii)选自在生物降解性高分子上接枝马来酸酐(Maleic anhydride,MA)而成的接枝共聚物、经环氧化的油以及具有环氧基的多官能性化合物中的一种以上的相容剂。因此,能够改善膜的加工性及覆盖功能性,并且提高膜的抗拉强度及延伸率。
最后,韩国公开专利第10-2003-0071056号公开了包含生物降解性脂肪族聚酯树脂、淀粉、聚乙烯树脂、二异氰酸酯类或马来酸酐结合剂以及乙烯硅烷类化合物的生物降解性母料树脂组合物及其制备方法以及包含其的膜。其未使用增塑剂,并且使淀粉分散,使得成型加工性和机械物性优秀,并且通过树脂中包含的淀粉与高密度聚乙烯树脂的接枝聚合来增加结合性,使得与通用树脂的捏合性优秀,从而提供机械物性优秀的生物崩坏性膜。
如上所述,为了提供多种组合物以提供优秀的相容性、生物降解性和经改善的机械物性,对降解性树脂进行了多种研究,并且仍需对此进行研发。为了满足这些要求,经长期研究,从而完成了本发明。
专利文献1:韩国公开专利公报第10-2018-0023037号(2018.03.06)
专利文献2:韩国公开专利公报第10-2017-0075052号(2017.07.03)
专利文献3:韩国公开专利公报第10-2003-0071056号(2003.09.03)
发明内容
技术问题
本发明的目的在于,解决上述所有的问题。
本发明的目的在于,改善生物降解性树脂组合物的分散性并提高相容性。
本发明的目的在于,提高包含生物降解性树脂组合物的膜的机械物性。
本发明的目的在于,提供包含所述生物降解性树脂组合物的膜,以应用于工业用、食品用、农业用等多种领域。
技术方案
旨在达成上述本发明的目的并实现后述的本发明的特征效果的本发明的特征构成如下。
根据本发明的一实施例,提供一种生物降解性树脂组合物,其包含10~70重量%的聚乙烯、10~60重量%的生物降解性树脂以及10~50重量%的选自聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物中的一种以上。
根据本发明的一实施例,提供一种生物降解性膜,其包含所述树脂组合物。所述膜能够用于选自工业用膜、食品用膜、农业用膜、生活用膜中的一种以上。
根据本发明的一实施例,提供一种生物降解性树脂组合物的制备方法,其中,所述生物降解性树脂组合物包含10~70重量%的聚乙烯、10~60重量%的生物降解性树脂以及10~50重量%的选自聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物中的一种以上,并且通过熔融共混方法制备。
根据本发明的一实施例,所述熔融共混在160℃~210℃下进行,并且使用选自挤出机、捏合机、布拉本德塑度仪、混炼机以及混合机中的一种以上。
有益效果
本发明的生物降解性树脂组合物提供三组分的共混树脂,以提供改善分散性并提高相容性的效果。从而提供提高包含所述生物降解性树脂组合物的膜的机械物性的效果。
包含本发明的生物降解性树脂组合物的膜能够应用于工业用、食品用、农业用等多种领域,并且提供优秀的机械物性和生物降解性,从而提供为解决环境问题做出贡献的效果。
附图说明
图1是确认实施例1的分散性的视频仪表系统(Video Meter System;VMS,测量倍率×160)结果。
图2是确认实施例2的分散性的视频仪表系统(Video Meter System;VMS,测量倍率×160)结果。
图3是确认比较例1的分散性的视频仪表系统(Video Meter System;VMS,测量倍率×160)结果。
具体实施方式
以下,通过本发明的优选实施例对本发明的构成及作用进行更加详细说明。只是,这是本发明的优选示例,无论以何种含义解释,本发明都不限于此。
未记载于此的内容为本领域技术人员容易推导出的内容,因此,省略对其说明。
实施例1
将65重量%的LLDPE(线性低密度聚乙烯,韩华化学公司M2010EA)、7.5重量%的PBAT(聚己二酸对苯二甲酸丁二醇酯,GIOSOLTEC公司SOLPOL-1000)、7.5重量%的MA-PBAT(共聚有聚己二酸对苯二甲酸丁二醇酯(PBAT)的马来酸酐,韩华化学公司,在向PBAT中添加MA之后,加入过氧化二异苯丙(dicumyl peroxide),并利用挤出机自行制备)以及20重量%的TPS(热塑性淀粉,Daesang公司Bionyl)混合,以示于表1中的方式制备混合物。
将制备出的所述混合物投入挤出机中,并在190℃的混合区温度下进行加热,以制备生物降解性树脂组合物,紧接着进行挤出以制造吹膜(blown film)。此时,所述吹膜的加工条件为螺杆(screw)为40mmΦ,模具(die)为75mmΦ,模具间隙(die gap)为2mm。螺杆(Screw)的速度为180rpm。
实施例2
除了包含15重量%的MA-PBAT(韩华化学公司自行制备)且不包含PBAT以外,以与实施例1相同的方式进行。
比较例1
除了包含15重量%的PBAT且不包含MA-PBAT以外,以与实施例1相同的方式进行。
比较例2
以包含100%的PBAT和聚乳酸(PLA)共混树脂的方式进行。
表1:
类别 | 实施例1 | 实施例2 | 比较例1 | 比较例2 |
LLDPE | 65 | 65 | 65 | - |
PBAT | 7.5 | - | 15 | - |
MA-PBAT | 7.5 | 15 | - | - |
PBAT/PLABLEND | - | - | - | 100 |
TPS | 20 | 20 | 20 | - |
实验例1
利用视频仪表系统(Video Meter System;VMS,测量倍率×160)进行测量,以确认具有表1中的组合比的实施例1和实施例2以及比较例1的生物降解性树脂的相容性和分散性。其结果记载于表2中。其结果示于图1至图3。
实验例2
测量了具有表1中的组合比的实施例1至实施例2以及比较例1至比较例2的膜的机械物性。
为了测量机械物性,通过破坏实验中的抗拉强度(ASTM D882)、破坏实验中的拉伸率(ASTM D882)、埃尔门多夫法撕裂强度(ASTM D1004)以及落锤冲击试验(dart dropimpact test)(ASTM D1709)进行实验,并将其结果记载于表2中。
表2:
能够确认本发明的相容性和分散性的图1和图2与比较例的图3相比,分散性得到了改善,从而能够确认相容性得到了改善。
参考本发明的表2的结果,能够确认实施例与比较例1相比,抗拉强度、撕裂强度以及跌落冲击强度值优秀,尤其是,能够确认抗拉强度显著改善。
另外,与比较例2相比,拉伸率、撕裂强度以及跌落冲击强度提高,并且能够确认随着共聚有聚己二酸对苯二甲酸丁二醇酯(PBAT)的马来酸酐(MA-PBAT)含量增加而分散性及机械物性提高。
根据本发明,提供包含聚乙烯、生物降解性树脂以及聚己二酸对苯二甲酸丁二醇酯与马来酸酐共聚物共混树脂的三组分的树脂组合物,以提高相容性,并且能够确认能够提高包含其的膜的机械物性。另外,当然能够提供经改善的生物降解性的效果。
另外,包含本发明的生物降解性树脂组合物的膜能够应用于工业用、食品用、农业用等多种领域,并且提供优秀的生物降解性,能够期待为解决环境问题做出贡献。
以上通过诸如具体的构成要素等多个特定事项和经限定的实施例对本发明进行了说明,但是这仅用于帮助全面地理解本发明,本发明不限于多个所述实施例,本领域技术人员能够由这些记载进行多种修改及变形。
因此,本发明的思想不限于上述的实施例,所附的权利要求以及其等同或等价的变形均属于本发明的思想的范畴。
实施方式
参照能够实施本发明的特定实施例作为示例,对本发明进行详细说明。对这些实施例进行充分详细说明,以便本领域技术人员能够实施本发明。本发明的多种实施例彼此不同但不必互斥。例如,记载于此的特定形状、结构以及特性与一实施例相关联,在不脱离本发明的精神及范围内,能够实现为另一实施例。另外,各个所公开的实施例中的个别构成要素的位置或配置能够在不脱离本发明的精神及范围内进行变更。因此,后述的详细说明不是限定性的,只要适当地说明,本发明的范围就仅由所附的权利要求及其所主张的等同的所有范围限定。
以下,参照本发明的多个优选实施例进行详细说明,以便本领域技术人员能够容易地实施本发明。
本发明的生物降解性(Biodegradable)是指被诸如细菌、藻类、霉菌等微生物降解为水和CO2或CH4的塑料。不仅表示塑料等成型产品物理性瓦解,还表示因高分子的主链断裂而分子量减小。
根据本发明的一实施例,提供一种生物降解性树脂组合物,其由包含聚乙烯、生物降解性树脂以及选自聚己二酸对苯二甲酸丁二醇酯(PBAT)和马来酸酐共聚物中的一种以上的三组分的混合物组合而成。
聚乙烯成本低廉且机械物性和加工性优秀,但是因难降解性而成为环境污染的主要原因。因此,本发明提供生物降解性树脂,以在保持聚乙烯的优秀的机械物性和加工性的同时,提供生物降解性。另外,包含选自聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物中的一种以上,以提高树脂中的组合物的分散性和相容性,从而提高机械物性。
根据本发明的一实施例,提供一种生物降解性树脂组合物,其包含10~70重量%的聚乙烯、10~60重量%的生物降解性树脂以及10~50重量%的选自聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物中的一种以上。
优选地,包含40~70重量%的聚乙烯、15~30重量%的生物降解性树脂以及10~30重量%的选自聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物中的一种以上。
当所述聚乙烯的含量大于70重量%时,生物降解性会存在问题,当小于40重量%时,在提供常规的塑料能够提供的优秀的机械物性方面存在局限性。当所述生物降解性树脂的含量大于30%时,会因产生大量的烟雾(Fume)以及模具结垢(Die Build-up)而存在加工性降低的问题,当小于15%时,在生物降解度效果及经济方面不利。当选自聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物中的一种以上大于40%时,与聚乙烯的相容性存在局限性,当小于10重量%时,相容性和基于其的机械物性改善效果不显著。因此,能够确认当提供该范围的三组分的组合时,能够基于经改善的分散性和经提高的相容性而提供显著提高的机械物性。可通过后述的实施例以及附图中的结果进行确认。
根据本发明的一实施例,所述聚乙烯包含选自高密度聚乙烯(HDPE,High DensityPolyethylene)、超低密度聚乙烯(VLDPE,Very-low-density polyethylene)、低密度聚乙烯(LDPE,Low Density Polyethylene)、中密度聚乙烯(MDPE,Medium DensityPolyethylene)、线性低密度聚乙烯(LLDPE,Linear Low Density Polyethylene)以及乙烯醋酸乙烯共聚物(EVA,Ethylene-Vinyl Acetate copolymer)中的一种以上。优选地,可提供线性低密度聚乙烯(LLDPE),以提供优秀的耐冲击性和耐久性等。
根据本发明的一实施例,所述聚乙烯的重均分子量为100,000~1,000,000,优选为100,000~300,000。
根据本发明的一实施例,所述生物降解性树脂包含选自热塑性淀粉(TPS)、聚乳酸(PLA)、聚己内酯(PCL)、聚丁二酸丁二醇酯(PBS)、聚乙醇酸(PGA)、聚羟基脂肪酸酯(PHA)、聚羟基丁酸酯(PHB)、纤维素以及甲壳质中的一种以上,优选地,可提供热塑性淀粉(TPS)。
所述聚乳酸、聚己内酯、聚丁二酸丁二醇酯以及聚乙醇酸属于脂肪族聚酯,它们的基于微生物的生物降解性优秀,并且提供生物相容性等特性。尤其是,聚乙醇酸的高强度及高耐热性等机械物性优秀,因此,尤其是广泛用于医疗。
所述聚羟基脂肪酸酯属于聚酯,其特点在于,具有优秀的生物降解性,并且,在好氧、厌氧、堆肥条件等任何条件下也具有优秀的降解性。另外,聚羟基丁酸酯为天然聚酯,属于聚羟基脂肪酸酯,是由D-3-羟基-丁酸(D-3-hydroxy-butyric acid)以直线状连接而成的均聚物,并且作为极其多样的细菌在细胞内合成的能量储存物质,提供与淀粉(starch)或糖原(glycogen)相同的生物学功能。
所述纤维素、甲壳质以及天然高分子类高分子的生物降解度优秀且容易供给,并且因诸如无毒性等特性而能够用作环保材料。
所述热塑性淀粉是指从植物从获取并且由直链淀粉和支链淀粉两组分组成的颗粒相的材料,例如,可包含选自大米淀粉、小麦淀粉、玉米淀粉、红薯淀粉、马铃薯淀粉、树薯(Tapioca)淀粉、木薯(cassava)淀粉以及它们的变性淀粉中的一种以上。变性淀粉可以是诸如对淀粉进行了物理或化学处理的α-淀粉、酸处理淀粉、氧化淀粉、两性淀粉、酯淀粉、醚淀粉等。所述淀粉的生物降解性优秀,并且由直链淀粉和支链淀粉组成,直链淀粉的葡萄糖包含羟基(-OH),因此,包括亲水性和氢键。
根据本发明的一实施例,包含选自所述聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物中的一种以上,并且其为生物降解性树脂,同时,还起到相容剂的作用。例如,可提供包含聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物的共混树脂,也可仅提供马来酸酐共聚物树脂,但不限于此。它们有助于解决低相容性所导致的机械物性降低的问题。
尤其是,所述马来酸酐共聚物由马来酸酐与选自聚己二酸对苯二甲酸丁二醇酯(PBAT)、聚丁二酸-己二酸丁二醇酯(PBSA)以及聚丁二酸丁二醇酯(PBS)中的一种以上共聚而成。所述共聚物可以是在向聚己二酸对苯二甲酸丁二醇酯(PBAT)中添加马来酸酐(MA)之后,加入过氧化二异苯丙(dicumyl peroxide)作为引发剂,并利用挤出机制备而成,但不限于此。
所述聚己二酸对苯二甲酸丁二醇酯(PBAT)作为脂肪族二醇,是指以1,4-丁二醇(1,4-butanediol)和作为芳族组分的对苯二甲酸(dimethyl terephthalate)作为原料,经酯化反应和缩聚反应得到的聚合物。所述聚丁二酸-己二酸丁二醇酯(PBSA)是指基础聚合物(base polymer)中的琥珀酸、己二酸以及1,4-丁二醇的共聚物的含量为60%以上的合成树脂。另外,聚丁二酸丁二醇酯(PBS)是指以1,4-丁二醇(1,4-butanediol)、琥珀酸(succinic acid)为原料,经酯化反应和缩聚反应得到的聚合物。
在本发明中,所述马来酸酐共聚物优选为共聚有聚己二酸对苯二甲酸丁二醇酯(PBAT)的马来酸酐(MA-PBAT)。通常,聚烯烃的化学性质为非极性,尽管对于溶剂具有耐化学性及耐药性,但是与具有极性的热塑性淀粉或聚己二酸丁二醇酯及其共聚物等的捏合性低,相容性成问题。因此,能够导入共聚有聚己二酸对苯二甲酸丁二醇酯(PBAT)的马来酸酐(MA-PBAT),以改善分散性,并基于提高相容性来改善机械物性。尤其是,能够期待通过导入作为生物降解性树脂的同时起到相容剂的作用的马来酸酐共聚物,提高生物降解性树脂所具有的低抗拉强度以及低跌落冲击强度。可通过后述的实施例以及附图中的结果对其进行确认。
根据本发明的一实施例,所述生物降解性树脂组合物的重均分子量为10,000~100,000,优选为20,000~50,000。
根据本发明的一实施例,所述生物降解性树脂组合物的熔融温度为100℃~130℃,基于ASTM D1238标准,在190℃、2.16Kg下,所述树脂组合物的熔融指数为0.01~10g/10min。所述熔融温度可通过作为常规的测量方法的示差热量仪(DSC,DifferentialScanning Calorimetry)或动态粘弹性(DMA,dynamic mechanical analysis)来测量,所述熔融指数(MI)基于ASTM D1238来测量。
根据本发明的一实施例,提供一种生物降解性膜,其包含生物降解性树脂组合物。
所述膜能够用于选自工业用膜、食品用膜、农业用膜、生活用膜中的一种以上,并且分散性得到改善,从而提高了相容性,并由此能够提高机械物性。尤其是,能够提供优秀的抗拉强度、拉伸率、撕裂强度以及跌落冲击强度等机械物性。
根据本发明的一实施例,可在使用所述膜之后,在具备规定条件的设施(Compost)中进行堆肥化。另外,即便不得以进行燃烧,由于所产生的热量低,因此,也能够提供能够使二噁英等有害物质的排放最小化的优点。
根据本发明的一实施例,所述膜的厚度可以是1~50μm,优选地,可以是20~40μm,更优选为30μm。
另一方面,关于包括所述组合物的生物降解性树脂组合物的制备方法如下。另外,可应用与上述的树脂组合物相同的内容,对重复的范围内的内容进行省略。
根据本发明的一实施例,提供一种生物降解性树脂组合物,其包含10~70重量%的聚乙烯、10~60重量%的生物降解性树脂以及10~50重量%的选自聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物中的一种以上。优选地,包含40~70重量%的聚乙烯、15~30重量%的生物降解性树脂以及10~30重量%的选自聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物中的一种以上。此时,马来酸酐共聚物优选为共聚有聚己二酸对苯二甲酸丁二醇酯(PBAT)的马来酸酐(MA-PBAT)。
根据本发明的一实施例,所述熔融共混使用选自挤出机、捏合机(Kneader)、布拉本德塑度仪(Brabender Plasticorder)、混炼机(Mixing Roll)以及混合机中的一种以上。
根据本发明的一实施例,所述挤出机使用选自单轴挤出机、双轴挤出机、单螺杆挤出机以及双螺杆挤出机中的一种以上。优选地,可以是双轴挤出机,以提供优秀的捏合性和易加工性。
根据本发明的一实施例,可根据在所述熔融共混中投入的各种原材料来优化工艺条件,并实施工艺。熔融温度可以是100℃~300℃,优选为160℃~210℃,挤出机螺杆的旋转速度可以是40rpm~700rpm,优选为100rpm~200rpm。
根据本发明的一实施例,可通过所述挤出机挤出,以制造压制成型膜或吹膜。
Claims (14)
1.一种生物降解性树脂组合物,其特征在于,
包含10~70重量%的聚乙烯、10~60重量%的生物降解性树脂以及10~50重量%的选自聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物中的一种以上。
2.根据权利要求1所述的生物降解性树脂组合物,其特征在于,
所述聚乙烯包含选自高密度聚乙烯、低密度聚乙烯、中密度聚乙烯、线性低密度聚乙烯以及乙烯醋酸乙烯共聚物中的一种以上。
3.根据权利要求1所述的生物降解性树脂组合物,其特征在于,
所述生物降解性树脂包含选自热塑性淀粉、聚乳酸、聚己内酯、聚丁二酸丁二醇酯、聚乙醇酸、聚羟基脂肪酸酯、聚羟基丁酸酯、纤维素以及甲壳质中的一种以上。
4.根据权利要求3所述的生物降解性树脂组合物,其特征在于,
所述热塑性淀粉包含选自大米淀粉、小麦淀粉、玉米淀粉、红薯淀粉、马铃薯淀粉、树薯淀粉、木薯淀粉以及它们的变性淀粉中的一种以上。
5.根据权利要求1所述的生物降解性树脂组合物,其特征在于,
所述马来酸酐共聚物由马来酸酐与选自聚己二酸对苯二甲酸丁二醇酯、聚丁二酸-己二酸丁二醇酯以及聚丁二酸丁二醇酯中的一种以上共聚而成。
6.根据权利要求1所述的生物降解性树脂组合物,其特征在于,
所述生物降解性树脂组合物的重均分子量为100,000~300,000。
7.根据权利要求1所述的生物降解性树脂组合物,其特征在于,
所述生物降解性树脂组合物的熔融温度为100℃~130℃,基于ASTM D1238标准,在190℃、2.16Kg下的熔融指数为0.01~10g/10min。
8.一种生物降解性膜,其特征在于,
包含权利要求1至7中任一项所述的生物降解性树脂组合物。
9.根据权利要求8所述的生物降解性膜,其特征在于,
所述膜能够用于选自工业用膜、食品用膜、农业用膜、生活用膜中的一种以上。
10.根据权利要求8所述的生物降解性膜,其特征在于,
所述膜的厚度为1~50μm。
11.一种生物降解性树脂组合物的制备方法,其特征在于,
所述生物降解性树脂组合物包含10~70重量%的聚乙烯、10~60重量%的生物降解性树脂以及10~50重量%的选自聚己二酸对苯二甲酸丁二醇酯和马来酸酐共聚物中的一种以上,并且通过熔融共混方法制备。
12.根据权利要求11所述的生物降解性树脂组合物的制备方法,其特征在于,
所述熔融共混在160℃~210℃下进行。
13.根据权利要求11所述的生物降解性树脂组合物的制备方法,其特征在于,
所述熔融共混使用选自挤出机、捏合机、布拉本德塑度仪、混炼机以及混合机中的一种以上。
14.根据权利要求11所述的生物降解性树脂组合物的制备方法,其特征在于,
所述挤出机使用选自单轴挤出机、双轴挤出机、单螺杆挤出机以及双螺杆挤出机中的一种以上。
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KR10-2019-0160636 | 2019-12-05 | ||
KR1020190160636A KR20210070641A (ko) | 2019-12-05 | 2019-12-05 | 생분해성 수지 조성물 및 그 제조방법 |
PCT/KR2020/014258 WO2021112397A1 (ko) | 2019-12-05 | 2020-10-19 | 생분해성 수지 조성물 및 그 제조방법 |
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EP (1) | EP4071211A4 (zh) |
JP (1) | JP2023504657A (zh) |
KR (1) | KR20210070641A (zh) |
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KR20210070002A (ko) | 2019-12-04 | 2021-06-14 | 한화솔루션 주식회사 | 생분해성 수지 조성물 및 그 제조방법 |
TWI775537B (zh) * | 2021-07-21 | 2022-08-21 | 南亞塑膠工業股份有限公司 | 生物可分解保鮮膜 |
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KR20170075052A (ko) * | 2015-12-22 | 2017-07-03 | 롯데정밀화학 주식회사 | 멀칭 필름용 수지 조성물 및 이를 이용하여 제조된 생분해성 멀칭 필름 |
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KR100484721B1 (ko) | 2002-02-27 | 2005-04-20 | 주식회사 엘지화학 | 생분해성 마스터배치 수지 조성물과 그 제조방법, 및 이를포함하는 생붕괴성 필름 |
JP5411902B2 (ja) * | 2011-09-26 | 2014-02-12 | Krh株式会社 | ストレッチフィルム製品 |
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- 2020-10-19 CN CN202080081896.4A patent/CN114729164A/zh active Pending
- 2020-10-19 JP JP2022533131A patent/JP2023504657A/ja active Pending
- 2020-10-19 WO PCT/KR2020/014258 patent/WO2021112397A1/ko unknown
- 2020-10-19 US US17/781,916 patent/US20230014582A1/en active Pending
- 2020-10-19 EP EP20895995.7A patent/EP4071211A4/en active Pending
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WO2015155198A1 (en) * | 2014-04-09 | 2015-10-15 | Saudi Basic Industries Corporation | Silage film |
KR20170073819A (ko) * | 2015-12-18 | 2017-06-29 | 주식회사 현진피오피 | 고분자 수지 분해조절을 위한 복합분해 제어용 수지조성물, 이를 이용한 필름 및 발포시트 |
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CN109880183A (zh) * | 2019-03-12 | 2019-06-14 | 宁波百福得环保科技有限公司 | 一种具有全生物降解特性的淀粉发泡包装材料及其制备方法 |
CN110511544A (zh) * | 2019-09-06 | 2019-11-29 | 三明百事达淀粉有限公司 | 一种生物可降解透气复合膜及其制备方法 |
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EP4071211A4 (en) | 2023-12-06 |
US20230014582A1 (en) | 2023-01-19 |
EP4071211A1 (en) | 2022-10-12 |
KR20210070641A (ko) | 2021-06-15 |
WO2021112397A1 (ko) | 2021-06-10 |
JP2023504657A (ja) | 2023-02-06 |
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