CN106280332A - 一种pcl抑菌包装膜的制备方法 - Google Patents

一种pcl抑菌包装膜的制备方法 Download PDF

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CN106280332A
CN106280332A CN201610700201.1A CN201610700201A CN106280332A CN 106280332 A CN106280332 A CN 106280332A CN 201610700201 A CN201610700201 A CN 201610700201A CN 106280332 A CN106280332 A CN 106280332A
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temperature
pcl
hot pressing
extruding pelletization
preparation
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王利萍
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films
    • C08L2203/162—Applications used for films sealable films
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)

Abstract

一种PCL抑菌包装膜的制备方法，先将材料置于真空干燥箱中，40℃条件下干燥24h，茶多酚、纤维素、壳聚糖分别按１％、4％和5%的重量比例与ＰＣＬ混合，将混合后的材料称取５ｇ，用双螺杆挤出机混合挤出造粒，双螺杆的温度设置为：进料口温度70℃，螺杆温度110℃，出料口温度115℃，转速27.5r/min，密炼时间为4min，挤出造粒后在热压机上热压成膜，热压温度设置为115℃，压力为35ＭＰａ。本发明的有益效果是：合成工艺简单，反应条件温和，生产成本较低，可重复性好，很好的改善了ＰＣＬ的阻氧性能，抑菌膜周围出现明显的抑菌圈。

Description

一种PCL抑菌包装膜的制备方法
技术领域
本发明涉及材料合成方法，具体的是一种PCL抑菌包装膜的制备方法。
背景技术
伴随着人们消费观念的转变、消费水平的提高和食品工业化规模的逐渐扩大，我国对食品的品质、卫生和安全等方面的要求越来越高。目前食品保鲜膜正给人们的生活提供着便
利，最常用的保鲜膜有聚乙烯（ＰＥ）膜、聚氯乙烯（ＰＶＣ）膜和聚偏二氯乙烯（ＰＶＤＣ）膜，但它们都不是生物可降解性的，都属于“白色污染”类的包装材料。从目前的食品防腐抗菌方法来看，还不能够完全满足需求，尤其是长时间、长距离的保质，不足以彻底消除食品安全方面的隐患。目前，巴氏杀菌法和添加防腐剂抑菌剂的抑菌法是食品防腐抑菌使用最广泛的方法。但巴氏杀菌的缺点是无法彻底杀灭食品中所有的微生物，而防腐剂抑菌剂的加入，一方面会改变食品本身的品质，另一方面，一些防腐剂的存在，会致癌、致畸、致突变，并且易引起食物中毒，这些问题的发生反而造成了食品安全的重大隐患。
上世纪９０年代，随着材料科学和食品包装理念的快速发展，欧洲率先提出了“活性包装”的概念。按照欧洲ＦＡＩＲ－ｐｒｏｊｅｃｔ ＣＴ ９８－４１７０的定义：活性包装是指在保持食品原有品质的同时，通过改善包装内部的环境，提高食品的安全性，从而延长食品货架期的一种包装方法。目前主要有四类活性包装系统，分别是水分吸收系统、氧气清除系统、乙醇或二氧化碳生成系统以及抑菌活性包装系统。其中抑菌活性包装是最具应用价值和发展前景的，因为其具有显著的抗菌性和普遍的应用性。抗菌活性包装之所以可以减少或者代替向食品中添加防腐剂，原因在于它是将抑菌剂混入高聚物包装材料中，使其成为具有抑菌活性的一种包装方法。抑菌活性剂加入到高聚物包装材料中后，可以缓慢的从其中释放出抑菌剂，从而在包装内部可以达到一个长期稳定的抑菌剂浓度，进而达到抑菌防腐的目的。同时，除以上优点之外，抑菌活性包装替代了传统食品保藏方法，即向食品中添加抑菌剂，这样便能长时间的保持和保藏食品的营养和风味，延长食品的货架期，进而提高其安全性。
发明内容
本发明所要解决的技术问题在于提供一种PCL抑菌包装膜的制备方法，提供一种新的制备方法。
本发明采用的制备方法，包括如下步骤：
先将材料置于真空干燥箱中，40℃条件下干燥24h，茶多酚、纤维素、壳聚糖分别按１％、4％和5%的重量比例与ＰＣＬ混合，将混合后的材料称取５ｇ，用双螺杆挤出机混合挤出造粒，双螺杆的温度设置为：进料口温度70℃，螺杆温度110℃，出料口温度115℃，转速27.5r/min，密炼时间为4min，挤出造粒后在热压机上热压成膜，热压温度设置为115℃，压力为35ＭＰａ。
本发明的有益效果是：合成工艺简单，反应条件温和，生产成本较低，可重复性好。
具体实施方式
以下结合实例进一步说明本发明的内容，由技术常识可知，本发明也可通过其它的不脱离本发明技术特征的方案来描述，因此所有在本发明范围内或等同本发明范围内的改变均被本发明包含。
实施例：
先将材料置于真空干燥箱中，40℃条件下干燥24h，茶多酚、纤维素、壳聚糖分别按１％、4％和5%的重量比例与ＰＣＬ混合，将混合后的材料称取５ｇ，用双螺杆挤出机混合挤出造粒，双螺杆的温度设置为：进料口温度70℃，螺杆温度110℃，出料口温度115℃，转速27.5r/min，密炼时间为4min，挤出造粒后在热压机上热压成膜，热压温度设置为115℃，压力为35ＭＰａ。
通过实验，抑菌膜的阻隔性能测试显示，降低了氧气透过系数，很好的改善了ＰＣＬ的阻氧性能。抑菌膜的抑菌性能显示，抑菌膜周围出现明显的抑菌圈。

Claims (1)

1.一种PCL抑菌包装膜的制备方法，包括如下步骤：先将材料置于真空干燥箱中，40℃条件下干燥24h，茶多酚、纤维素、壳聚糖分别按１％、4％和5%的重量比例与ＰＣＬ混合，将混合后的材料称取５ｇ，用双螺杆挤出机混合挤出造粒，双螺杆的温度设置为：进料口温度70℃，螺杆温度110℃，出料口温度115℃，转速27.5r/min，密炼时间为4min，挤出造粒后在热压机上热压成膜，热压温度设置为115℃，压力为35ＭＰａ。
CN201610700201.1A 2016-08-22 2016-08-22 一种pcl抑菌包装膜的制备方法 Pending CN106280332A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109021517A (zh) * 2018-06-30 2018-12-18 车宏伟 一种复合防腐抗菌缓释薄膜及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040068059A1 (en) * 2000-11-30 2004-04-08 Hiroshi Katayama Aliphatic polyester copolymer and process for producing the same, biodegradable resin molding based on aliphatic polyester, and lactone-containing resin
CN101693773A (zh) * 2009-09-23 2010-04-14 中国林业科学研究院林产化学工业研究所 橡子粉/聚己内酯复合材料及其制备方法
CN101735636A (zh) * 2008-11-12 2010-06-16 福建恒安集团有限公司 生物降解时间可控型塑料薄膜及其制备方法
CN101974213A (zh) * 2010-11-25 2011-02-16 四川奎克生物科技有限公司 一种可降解抑菌食物包装材料及其制备方法
CN102604308A (zh) * 2011-12-19 2012-07-25 西南科技大学 吹塑型热塑性魔芋葡甘聚糖/聚己内酯复合树脂的制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040068059A1 (en) * 2000-11-30 2004-04-08 Hiroshi Katayama Aliphatic polyester copolymer and process for producing the same, biodegradable resin molding based on aliphatic polyester, and lactone-containing resin
CN101735636A (zh) * 2008-11-12 2010-06-16 福建恒安集团有限公司 生物降解时间可控型塑料薄膜及其制备方法
CN101693773A (zh) * 2009-09-23 2010-04-14 中国林业科学研究院林产化学工业研究所 橡子粉/聚己内酯复合材料及其制备方法
CN101974213A (zh) * 2010-11-25 2011-02-16 四川奎克生物科技有限公司 一种可降解抑菌食物包装材料及其制备方法
CN102604308A (zh) * 2011-12-19 2012-07-25 西南科技大学 吹塑型热塑性魔芋葡甘聚糖/聚己内酯复合树脂的制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109021517A (zh) * 2018-06-30 2018-12-18 车宏伟 一种复合防腐抗菌缓释薄膜及其制备方法

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Application publication date: 20170104