<p id="rtr9r"></p>

        <ruby id="rtr9r"><b id="rtr9r"><var id="rtr9r"></var></b></ruby>
        <p id="rtr9r"><cite id="rtr9r"></cite></p>

          <p id="rtr9r"><cite id="rtr9r"></cite></p>
          <noframes id="rtr9r"><ruby id="rtr9r"></ruby>

              <p id="rtr9r"></p>

                  <p id="rtr9r"><dfn id="rtr9r"></dfn></p>

                        <p id="rtr9r"></p>

                        Biodegradability testing standards and methods

                        View:448 2021-05-21

                              Biodegradation generally refers to the decomposition of microorganisms. Microbial decomposition substances that exist in nature will not cause adverse effects on the environment. The degree of degradation is called degradation index. Biodegradable materials refer to materials that can be completely decomposed by microorganisms (such as bacteria, fungi, algae, etc.) into low-molecular compounds under natural environmental conditions with appropriate and indicative deadlines.


                              Biodegradability is an important property of PBS polyester. At present, the main method for evaluating the biodegradability of plastics in the world is the composting method. Compost contains rich sources of microorganisms, which can macroscopically reflect the biodegradation of plastics in the natural environment to a certain extent. performance.


                              Mix the sample material with the compost inoculum and put it in a composting container, and fully compost it under certain conditions of oxygen, temperature (58±2C), and humidity (50-55%), and measure the material degraded after 45 days The final release of CO2 (which can be extended to 6 months), the ratio of the actual CO2 release to the theoretical maximum release is used to express the biodegradation rate of the material.

                        Home
                        Phone
                        Feedback
                        99久久免费国产精品四虎|日本欧美一区二区三区在线播放|国产v亚洲v天堂a无码|国产曰韩久久久久精品影院

                              <p id="rtr9r"></p>

                              <ruby id="rtr9r"><b id="rtr9r"><var id="rtr9r"></var></b></ruby>
                              <p id="rtr9r"><cite id="rtr9r"></cite></p>

                                <p id="rtr9r"><cite id="rtr9r"></cite></p>
                                <noframes id="rtr9r"><ruby id="rtr9r"></ruby>

                                    <p id="rtr9r"></p>

                                        <p id="rtr9r"><dfn id="rtr9r"></dfn></p>

                                              <p id="rtr9r"></p>