CN107298785A - 一种环保抑菌聚乙烯膜及其制备方法 - Google Patents

一种环保抑菌聚乙烯膜及其制备方法 Download PDF

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CN107298785A
CN107298785A CN201710539823.5A CN201710539823A CN107298785A CN 107298785 A CN107298785 A CN 107298785A CN 201710539823 A CN201710539823 A CN 201710539823A CN 107298785 A CN107298785 A CN 107298785A
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刘威
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Abstract

本发明公开一种环保抑菌聚乙烯膜,是由下述原料制备而成:聚乙烯树脂粉90~110份、丁香精油0.1~0.2份、葡萄籽精油0.2~0.4份、柠檬酸0.7~0.9份、木糖醇5~7份、乙酰柠檬酸三正丁酯20~25份、热稳定剂4~8份、润滑剂0.2~0.6份。本发明聚乙烯膜可抑制薄膜周围的细菌滋生,与普通市售聚乙烯薄膜相比,对金黄色葡萄球菌、大肠杆菌等细菌均有显著抑制效果。本发明使用的抑菌剂为纯天然植物提取抑菌剂,可长期使用,安全无毒。

Description

一种环保抑菌聚乙烯膜及其制备方法
技术领域
本发明涉及包装材料技术领域,具体涉及一种环保抑菌聚乙烯膜及其制备方法。
背景技术
随着食品行业的大规模发展,食品在世界范围内流通扩展,不仅需要维持食品较长的货架寿命,而且还要保持其营养新鲜的品质。特别是在近年来,随着全球范围内的食品安全事件频发,人们对自身健康的关注以及对食品质量的要求在不断提高,现在消费者倾向于选择不含防腐剂,不被微生物污染,保持良好品质和感官的食品。而传统的食品包装大多是以塑料为代表的惰性包装材料,此类材料主要是通过物理手段隔绝被包装食品与外界环境的接触来保持食品品质,而本身不具备任何生物活性。此种情况下,为了保持食品的货架寿命,往往需要直接往食品中添加大量的防腐剂,然而在抗菌剂发生效应的过程中,尤其是初期,高浓度的抗菌剂不仅可能使细菌产生耐受性,而且会带来食品安全问题。如何减少食品污染和在加工过程中减少化学添加剂,并且尽可能地不改变食品的品质,最大限度地提高食品的安全性,对食品行业提出了新的挑战。在这种背景下,活性抗菌包装以其延长加工食品和新鲜食品的货架期方面的显著效能、最大限度地保持食品风味和安全性,并提高包装产品的可追溯性,减少供应链中由于氧气和温度造成的损失,已成为目前食品包装工业发展的主要方向之一。
传统的PVC薄膜欠缺抑菌功能,目前虽已有对具有抑菌功能的PVC薄膜的研究,但仍存在不足。中国专利CN103102618A,一种TiO2、Ag/PVC复合抑菌薄膜,该专利虽在薄膜中加入改性TiO2、Ag,使薄膜具有良好的抑菌性能,但仍含有对人体有害的增塑剂;中国专利CN102101928A,一种抗菌保鲜膜,该专利虽在保鲜膜中添加了银离子抗菌剂,以使其具有抗菌功能,但其中仍含有邻苯二甲酸酯类增塑剂,且已有研究表明,银离子抗菌剂虽具有较强的抑菌功能,但如果不慎摄入人体后仍会对人体健康产生危害。
发明内容
本发明提出一种环保抑菌聚乙烯膜及其制备方法,所述聚乙烯膜具有抑菌功能,环保无毒,广泛适用于食品包装等领域。
本发明的技术方案是这样实现的:
一种环保抑菌聚乙烯膜,是由下述原料制备而成:聚乙烯树脂粉90~110份、丁香精油0.1~0.2份、葡萄籽精油0.2~0.4份、柠檬酸0.7~0.9份、木糖醇5~7份、乙酰柠檬酸三正丁酯20~25份、热稳定剂4~8份、润滑剂0.2~0.6份。
其中,优选地,一种环保抑菌聚乙烯膜,是由下述原料制备而成:聚乙烯树脂粉100份、丁香精油0.15份、葡萄籽精油0.3份、柠檬酸0.8份、木糖醇6份、乙酰柠檬酸三正丁酯23份、热稳定剂6份、润滑剂0.4份。
其中,优选地,所述热稳定剂为蓖麻酸钙、硬脂酸钙、硬脂酸锌、硬脂酸镁中一种或几种。
其中,优选地,所述润滑剂为硬脂酸甘油酯、硬脂酸酰胺、石蜡、聚乙烯蜡中的一种或几种。
一种环保抑菌聚乙烯膜的制备方法,包括以下步骤:称取聚乙烯树脂粉、丁香精油、葡萄籽精油、柠檬酸、木糖醇、乙酰柠檬酸三正丁酯、热稳定剂、润滑剂加入高速搅拌机中升温至80℃搅拌混合均匀,送至挤出机,挤出机温度控制在120℃,后将物料送至炼塑机,再上料至压延机,压延机温度为150℃,经压延、定型、冷却后可得成品。
本发明的有益效果:
本发明加入的葡萄籽油(grape seed oil,GSO)和丁香精油(clove,Cl)都是天然植物提取物,与传统保鲜成分相比更具安全性。其中葡萄籽油是由葡萄籽压榨分离精制而得的纯天然制品,由于富含原花青素而拥有强有力的抗氧化清除自由基的能力。丁香精油是由桃金娘科蒲桃属乔木丁香提炼而来,具有很强的抑菌效果。其中最主要的抑菌物质是丁香酚,丁香精油对果蔬的保鲜效果。
与现有技术相比,本发明聚乙烯膜可抑制薄膜周围的细菌滋生,与普通市售聚乙烯薄膜相比,对金黄色葡萄球菌、大肠杆菌等细菌均有显著抑制效果。本发明使用的抑菌剂为纯天然植物提取抑菌剂,可长期使用,安全无毒。
具体实施方式
下面将结合本发明实施例,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
实施例1
本实施例提供一种环保抑菌聚乙烯膜,是由下述原料制备而成聚乙烯树脂粉100份、丁香精油0.15份、葡萄籽精油0.3份、柠檬酸0.8份、木糖醇6份、乙酰柠檬酸三正丁酯23份、热稳定剂6份、润滑剂0.4份。
其中,所述热稳定剂为蓖麻酸钙。
其中,所述润滑剂为硬脂酸甘油酯。
本实施例环保抑菌聚乙烯膜的制备方法,包括以下步骤:称取聚乙烯树脂粉、丁香精油、葡萄籽精油、柠檬酸、木糖醇、乙酰柠檬酸三正丁酯、热稳定剂、润滑剂加入高速搅拌机中升温至80℃搅拌混合均匀,送至挤出机,挤出机温度控制在120℃,后将物料送至炼塑机,再上料至压延机,压延机温度为150℃,经压延、定型、冷却后可得成品。
对由本实施例制得的薄膜进行抗菌性能测试:
其抑菌性能测试结果为:金黄色葡萄球菌抑菌率为76%,大肠杆菌抑菌率为92%。
实施例2
本实施例提供一种环保抑菌聚乙烯膜,是由下述原料制备而成:聚乙烯树脂粉90份、丁香精油0.2份、葡萄籽精油0.2份、柠檬酸0.9份、木糖醇5份、乙酰柠檬酸三正丁酯25份、热稳定剂4份、润滑剂0.6份。
其中,所述热稳定剂为硬脂酸钙。
其中,所述润滑剂为硬脂酸酰胺。
本实施例环保抑菌聚乙烯膜的制备方法,包括以下步骤:称取聚乙烯树脂粉、丁香精油、葡萄籽精油、柠檬酸、木糖醇、乙酰柠檬酸三正丁酯、热稳定剂、润滑剂加入高速搅拌机中升温至80℃搅拌混合均匀,送至挤出机,挤出机温度控制在120℃,后将物料送至炼塑机,再上料至压延机,压延机温度为150℃,经压延、定型、冷却后可得成品。
对由本实施例制得的薄膜进行抗菌性能测试:
其抑菌性能测试结果为:金黄色葡萄球菌抑菌率为81%,大肠杆菌抑菌率为90%。
实施例3
本实施例提供一种环保抑菌聚乙烯膜,是由下述原料制备而成:聚乙烯树脂粉110份、丁香精油0.1份、葡萄籽精油0.4份、柠檬酸0.7份、木糖醇5~7份、乙酰柠檬酸三正丁酯25份、热稳定剂4份、润滑剂0.6份。
其中,优选地,一种环保抑菌聚乙烯膜,是由下述原料制备而成:聚乙烯树脂粉100份、丁香精油0.15份、葡萄籽精油0.3份、柠檬酸0.8份、木糖醇6份、乙酰柠檬酸三正丁酯23份、热稳定剂6份、润滑剂0.4份。
其中,所述热稳定剂为硬脂酸锌。
其中,所述润滑剂为石蜡。
本实施例环保抑菌聚乙烯膜的制备方法,包括以下步骤:称取聚乙烯树脂粉、丁香精油、葡萄籽精油、柠檬酸、木糖醇、乙酰柠檬酸三正丁酯、热稳定剂、润滑剂加入高速搅拌机中升温至80℃搅拌混合均匀,送至挤出机,挤出机温度控制在120℃,后将物料送至炼塑机,再上料至压延机,压延机温度为150℃,经压延、定型、冷却后可得成品。
对由本实施例制得的薄膜进行抗菌性能测试:
其抑菌性能测试结果为:金黄色葡萄球菌抑菌率为80%,大肠杆菌抑菌率为93%。
实施例4
本实施例提供一种环保抑菌聚乙烯膜,是由下述原料制备而成:聚乙烯树脂粉95份、丁香精油0.15份、葡萄籽精油0.25份、柠檬酸0.85份、木糖醇6.5份、乙酰柠檬酸三正丁酯24份、热稳定剂5份、润滑剂0.5份。
其中,所述热稳定剂为硬脂酸镁。
其中,所述润滑剂为聚乙烯蜡。
本实施例环保抑菌聚乙烯膜的制备方法,包括以下步骤:称取聚乙烯树脂粉、丁香精油、葡萄籽精油、柠檬酸、木糖醇、乙酰柠檬酸三正丁酯、热稳定剂、润滑剂加入高速搅拌机中升温至80℃搅拌混合均匀,送至挤出机,挤出机温度控制在120℃,后将物料送至炼塑机,再上料至压延机,压延机温度为150℃,经压延、定型、冷却后可得成品。
对由本实施例制得的薄膜进行抗菌性能测试:
其抑菌性能测试结果为:金黄色葡萄球菌抑菌率为80%,大肠杆菌抑菌率为91%。
实施例5
本实施例提供一种环保抑菌聚乙烯膜,是由下述原料制备而成:聚乙烯树脂粉98份、丁香精油0.18份、葡萄籽精油0.35份、柠檬酸0.75份、木糖醇5.5份、乙酰柠檬酸三正丁酯22份、热稳定剂5份、润滑剂0.4份。
其中,所述热稳定剂为重量比为1:2的蓖麻酸钙和硬脂酸钙。
其中,所述润滑剂为重量比为1:1的硬脂酸甘油酯和硬脂酸酰胺。
本实施例环保抑菌聚乙烯膜的制备方法,包括以下步骤:称取聚乙烯树脂粉、丁香精油、葡萄籽精油、柠檬酸、木糖醇、乙酰柠檬酸三正丁酯、热稳定剂、润滑剂加入高速搅拌机中升温至80℃搅拌混合均匀,送至挤出机,挤出机温度控制在120℃,后将物料送至炼塑机,再上料至压延机,压延机温度为150℃,经压延、定型、冷却后可得成品。
对由本实施例制得的薄膜进行抗菌性能测试:
其抑菌性能测试结果为:金黄色葡萄球菌抑菌率为82%,大肠杆菌抑菌率为93%。
实施例1~5制得的聚乙烯膜的力学性能数据见表1。
从表1可以看出,本发明制备得到的聚乙烯薄膜,在具有抑菌效果的基础上,还能满足塑料膜的本身性能要求;在建材家具、玩具及食品包装等领域具有广阔的应用前景。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (5)

1.一种环保抑菌聚乙烯膜,其特征在于是由下述原料制备而成:聚乙烯树脂粉90~110份、丁香精油0.1~0.2份、葡萄籽精油0.2~0.4份、柠檬酸0.7~0.9份、木糖醇5~7份、乙酰柠檬酸三正丁酯20~25份、热稳定剂4~8份、润滑剂0.2~0.6份。
2.根据权利要求1所述的一种环保抑菌聚乙烯膜,其特征在于是由下述原料制备而成:聚乙烯树脂粉100份、丁香精油0.15份、葡萄籽精油0.3份、柠檬酸0.8份、木糖醇6份、乙酰柠檬酸三正丁酯23份、热稳定剂6份、润滑剂0.4份。
3.根据权利要求1所述的一种环保抑菌聚乙烯膜,其特征在于:所述热稳定剂为蓖麻酸钙、硬脂酸钙、硬脂酸锌、硬脂酸镁中一种或几种。
4.根据权利要求1所述的一种环保抑菌聚乙烯膜,其特征在于:所述润滑剂为硬脂酸甘油酯、硬脂酸酰胺、石蜡、聚乙烯蜡中的一种或几种。
5.一种权利要求1所述的环保抑菌聚乙烯膜的制备方法,其特征在于包括以下步骤:称取聚乙烯树脂粉、丁香精油、葡萄籽精油、柠檬酸、木糖醇、乙酰柠檬酸三正丁酯、热稳定剂、润滑剂加入高速搅拌机中升温至80℃搅拌混合均匀,送至挤出机,挤出机温度控制在120℃,后将物料送至炼塑机,再上料至压延机,压延机温度为150℃,经压延、定型、冷却后可得成品。
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